diff --git a/lib/dns/rdata.c b/lib/dns/rdata.c
index 2e6ca29b7a..44e6ce45c0 100644
--- a/lib/dns/rdata.c
+++ b/lib/dns/rdata.c
@@ -407,14 +407,13 @@ locator_pton(const char *src, unsigned char *dst) {
 	return (1);
 }
 
-static inline isc_result_t
+static inline void
 name_duporclone(const dns_name_t *source, isc_mem_t *mctx, dns_name_t *target) {
 	if (mctx != NULL) {
 		dns_name_dup(source, mctx, target);
 	} else {
 		dns_name_clone(source, target);
 	}
-	return (ISC_R_SUCCESS);
 }
 
 static inline void *
diff --git a/lib/dns/rdata/any_255/tsig_250.c b/lib/dns/rdata/any_255/tsig_250.c
index 083bde3345..5465545369 100644
--- a/lib/dns/rdata/any_255/tsig_250.c
+++ b/lib/dns/rdata/any_255/tsig_250.c
@@ -462,7 +462,7 @@ tostruct_any_tsig(ARGS_TOSTRUCT) {
 	dns_name_init(&alg, NULL);
 	dns_name_fromregion(&alg, &sr);
 	dns_name_init(&tsig->algorithm, NULL);
-	RETERR(name_duporclone(&alg, mctx, &tsig->algorithm));
+	name_duporclone(&alg, mctx, &tsig->algorithm);
 
 	isc_region_consume(&sr, name_length(&tsig->algorithm));
 
diff --git a/lib/dns/rdata/ch_3/a_1.c b/lib/dns/rdata/ch_3/a_1.c
index 0df83160cb..7c5cad9e73 100644
--- a/lib/dns/rdata/ch_3/a_1.c
+++ b/lib/dns/rdata/ch_3/a_1.c
@@ -234,7 +234,7 @@ tostruct_ch_a(ARGS_TOSTRUCT) {
 	isc_region_consume(&region, name_length(&name));
 
 	dns_name_init(&a->ch_addr_dom, NULL);
-	RETERR(name_duporclone(&name, mctx, &a->ch_addr_dom));
+	name_duporclone(&name, mctx, &a->ch_addr_dom);
 	a->ch_addr = htons(uint16_fromregion(&region));
 	a->mctx = mctx;
 	return (ISC_R_SUCCESS);
diff --git a/lib/dns/rdata/generic/afsdb_18.c b/lib/dns/rdata/generic/afsdb_18.c
index d2b84b7273..71c6ce61e5 100644
--- a/lib/dns/rdata/generic/afsdb_18.c
+++ b/lib/dns/rdata/generic/afsdb_18.c
@@ -219,7 +219,7 @@ tostruct_afsdb(ARGS_TOSTRUCT) {
 	dns_name_init(&name, NULL);
 	dns_name_fromregion(&name, &region);
 
-	RETERR(name_duporclone(&name, mctx, &afsdb->server));
+	name_duporclone(&name, mctx, &afsdb->server);
 	afsdb->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/amtrelay_260.c b/lib/dns/rdata/generic/amtrelay_260.c
index 1cd8d1dd92..d68267e86f 100644
--- a/lib/dns/rdata/generic/amtrelay_260.c
+++ b/lib/dns/rdata/generic/amtrelay_260.c
@@ -350,7 +350,7 @@ tostruct_amtrelay(ARGS_TOSTRUCT) {
 
 	case 3:
 		dns_name_fromregion(&name, &region);
-		RETERR(name_duporclone(&name, mctx, &amtrelay->gateway));
+		name_duporclone(&name, mctx, &amtrelay->gateway);
 		isc_region_consume(&region, name_length(&name));
 		break;
 
diff --git a/lib/dns/rdata/generic/cname_5.c b/lib/dns/rdata/generic/cname_5.c
index aa45ad3713..0ae8981498 100644
--- a/lib/dns/rdata/generic/cname_5.c
+++ b/lib/dns/rdata/generic/cname_5.c
@@ -153,7 +153,7 @@ tostruct_cname(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&cname->cname, NULL);
-	RETERR(name_duporclone(&name, mctx, &cname->cname));
+	name_duporclone(&name, mctx, &cname->cname);
 	cname->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/dname_39.c b/lib/dns/rdata/generic/dname_39.c
index 6964249b2e..c750a0fcca 100644
--- a/lib/dns/rdata/generic/dname_39.c
+++ b/lib/dns/rdata/generic/dname_39.c
@@ -153,7 +153,7 @@ tostruct_dname(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&dname->dname, NULL);
-	RETERR(name_duporclone(&name, mctx, &dname->dname));
+	name_duporclone(&name, mctx, &dname->dname);
 	dname->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/ipseckey_45.c b/lib/dns/rdata/generic/ipseckey_45.c
index 5404039216..f12c6dc48c 100644
--- a/lib/dns/rdata/generic/ipseckey_45.c
+++ b/lib/dns/rdata/generic/ipseckey_45.c
@@ -389,7 +389,7 @@ tostruct_ipseckey(ARGS_TOSTRUCT) {
 	case 3:
 		dns_name_init(&ipseckey->gateway, NULL);
 		dns_name_fromregion(&name, &region);
-		RETERR(name_duporclone(&name, mctx, &ipseckey->gateway));
+		name_duporclone(&name, mctx, &ipseckey->gateway);
 		isc_region_consume(&region, name_length(&name));
 		break;
 	}
diff --git a/lib/dns/rdata/generic/lp_107.c b/lib/dns/rdata/generic/lp_107.c
index 7164394aac..5fa2709dbc 100644
--- a/lib/dns/rdata/generic/lp_107.c
+++ b/lib/dns/rdata/generic/lp_107.c
@@ -164,7 +164,7 @@ tostruct_lp(ARGS_TOSTRUCT) {
 	isc_region_consume(&region, 2);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&lp->lp, NULL);
-	RETERR(name_duporclone(&name, mctx, &lp->lp));
+	name_duporclone(&name, mctx, &lp->lp);
 	lp->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/mb_7.c b/lib/dns/rdata/generic/mb_7.c
index 0702fbe490..f5a04dd202 100644
--- a/lib/dns/rdata/generic/mb_7.c
+++ b/lib/dns/rdata/generic/mb_7.c
@@ -152,7 +152,7 @@ tostruct_mb(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&mb->mb, NULL);
-	RETERR(name_duporclone(&name, mctx, &mb->mb));
+	name_duporclone(&name, mctx, &mb->mb);
 	mb->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/md_3.c b/lib/dns/rdata/generic/md_3.c
index cff5e91c3c..899607b1c8 100644
--- a/lib/dns/rdata/generic/md_3.c
+++ b/lib/dns/rdata/generic/md_3.c
@@ -152,7 +152,7 @@ tostruct_md(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &r);
 	dns_name_fromregion(&name, &r);
 	dns_name_init(&md->md, NULL);
-	RETERR(name_duporclone(&name, mctx, &md->md));
+	name_duporclone(&name, mctx, &md->md);
 	md->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/mf_4.c b/lib/dns/rdata/generic/mf_4.c
index 13b63561fe..f236381791 100644
--- a/lib/dns/rdata/generic/mf_4.c
+++ b/lib/dns/rdata/generic/mf_4.c
@@ -152,7 +152,7 @@ tostruct_mf(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &r);
 	dns_name_fromregion(&name, &r);
 	dns_name_init(&mf->mf, NULL);
-	RETERR(name_duporclone(&name, mctx, &mf->mf));
+	name_duporclone(&name, mctx, &mf->mf);
 	mf->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/mg_8.c b/lib/dns/rdata/generic/mg_8.c
index efaa0a34be..eff49fe33d 100644
--- a/lib/dns/rdata/generic/mg_8.c
+++ b/lib/dns/rdata/generic/mg_8.c
@@ -152,7 +152,7 @@ tostruct_mg(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&mg->mg, NULL);
-	RETERR(name_duporclone(&name, mctx, &mg->mg));
+	name_duporclone(&name, mctx, &mg->mg);
 	mg->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/minfo_14.c b/lib/dns/rdata/generic/minfo_14.c
index 62b5897bc6..bb860ed3c4 100644
--- a/lib/dns/rdata/generic/minfo_14.c
+++ b/lib/dns/rdata/generic/minfo_14.c
@@ -199,7 +199,6 @@ tostruct_minfo(ARGS_TOSTRUCT) {
 	dns_rdata_minfo_t *minfo = target;
 	isc_region_t region;
 	dns_name_t name;
-	isc_result_t result;
 
 	REQUIRE(rdata->type == dns_rdatatype_minfo);
 	REQUIRE(minfo != NULL);
@@ -213,23 +212,14 @@ tostruct_minfo(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&minfo->rmailbox, NULL);
-	RETERR(name_duporclone(&name, mctx, &minfo->rmailbox));
+	name_duporclone(&name, mctx, &minfo->rmailbox);
 	isc_region_consume(&region, name_length(&name));
 
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&minfo->emailbox, NULL);
-	result = name_duporclone(&name, mctx, &minfo->emailbox);
-	if (result != ISC_R_SUCCESS) {
-		goto cleanup;
-	}
+	name_duporclone(&name, mctx, &minfo->emailbox);
 	minfo->mctx = mctx;
 	return (ISC_R_SUCCESS);
-
-cleanup:
-	if (mctx != NULL) {
-		dns_name_free(&minfo->rmailbox, mctx);
-	}
-	return (ISC_R_NOMEMORY);
 }
 
 static inline void
diff --git a/lib/dns/rdata/generic/mr_9.c b/lib/dns/rdata/generic/mr_9.c
index 6205358313..95163ecee4 100644
--- a/lib/dns/rdata/generic/mr_9.c
+++ b/lib/dns/rdata/generic/mr_9.c
@@ -152,7 +152,7 @@ tostruct_mr(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&mr->mr, NULL);
-	RETERR(name_duporclone(&name, mctx, &mr->mr));
+	name_duporclone(&name, mctx, &mr->mr);
 	mr->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/mx_15.c b/lib/dns/rdata/generic/mx_15.c
index 2b5fe03f54..a1aea66829 100644
--- a/lib/dns/rdata/generic/mx_15.c
+++ b/lib/dns/rdata/generic/mx_15.c
@@ -238,7 +238,7 @@ tostruct_mx(ARGS_TOSTRUCT) {
 	isc_region_consume(&region, 2);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&mx->mx, NULL);
-	RETERR(name_duporclone(&name, mctx, &mx->mx));
+	name_duporclone(&name, mctx, &mx->mx);
 	mx->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/naptr_35.c b/lib/dns/rdata/generic/naptr_35.c
index d8de8e9def..440d481d43 100644
--- a/lib/dns/rdata/generic/naptr_35.c
+++ b/lib/dns/rdata/generic/naptr_35.c
@@ -493,7 +493,6 @@ static inline isc_result_t
 tostruct_naptr(ARGS_TOSTRUCT) {
 	dns_rdata_naptr_t *naptr = target;
 	isc_region_t r;
-	isc_result_t result;
 	dns_name_t name;
 
 	REQUIRE(rdata->type == dns_rdatatype_naptr);
@@ -546,10 +545,7 @@ tostruct_naptr(ARGS_TOSTRUCT) {
 	dns_name_init(&name, NULL);
 	dns_name_fromregion(&name, &r);
 	dns_name_init(&naptr->replacement, NULL);
-	result = name_duporclone(&name, mctx, &naptr->replacement);
-	if (result != ISC_R_SUCCESS) {
-		goto cleanup;
-	}
+	name_duporclone(&name, mctx, &naptr->replacement);
 	naptr->mctx = mctx;
 	return (ISC_R_SUCCESS);
 
diff --git a/lib/dns/rdata/generic/ns_2.c b/lib/dns/rdata/generic/ns_2.c
index 21ed02349e..84c6b35da1 100644
--- a/lib/dns/rdata/generic/ns_2.c
+++ b/lib/dns/rdata/generic/ns_2.c
@@ -163,7 +163,7 @@ tostruct_ns(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&ns->name, NULL);
-	RETERR(name_duporclone(&name, mctx, &ns->name));
+	name_duporclone(&name, mctx, &ns->name);
 	ns->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/nsec_47.c b/lib/dns/rdata/generic/nsec_47.c
index f7e4693c33..251268cec0 100644
--- a/lib/dns/rdata/generic/nsec_47.c
+++ b/lib/dns/rdata/generic/nsec_47.c
@@ -172,7 +172,7 @@ tostruct_nsec(ARGS_TOSTRUCT) {
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_init(&nsec->next, NULL);
-	RETERR(name_duporclone(&name, mctx, &nsec->next));
+	name_duporclone(&name, mctx, &nsec->next);
 
 	nsec->len = region.length;
 	nsec->typebits = mem_maybedup(mctx, region.base, region.length);
diff --git a/lib/dns/rdata/generic/nxt_30.c b/lib/dns/rdata/generic/nxt_30.c
index d713f0192a..8071996514 100644
--- a/lib/dns/rdata/generic/nxt_30.c
+++ b/lib/dns/rdata/generic/nxt_30.c
@@ -251,7 +251,7 @@ tostruct_nxt(ARGS_TOSTRUCT) {
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_init(&nxt->next, NULL);
-	RETERR(name_duporclone(&name, mctx, &nxt->next));
+	name_duporclone(&name, mctx, &nxt->next);
 
 	nxt->len = region.length;
 	nxt->typebits = mem_maybedup(mctx, region.base, region.length);
diff --git a/lib/dns/rdata/generic/ptr_12.c b/lib/dns/rdata/generic/ptr_12.c
index bf689eb7c0..0b044fe264 100644
--- a/lib/dns/rdata/generic/ptr_12.c
+++ b/lib/dns/rdata/generic/ptr_12.c
@@ -165,7 +165,7 @@ tostruct_ptr(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&ptr->ptr, NULL);
-	RETERR(name_duporclone(&name, mctx, &ptr->ptr));
+	name_duporclone(&name, mctx, &ptr->ptr);
 	ptr->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/generic/rp_17.c b/lib/dns/rdata/generic/rp_17.c
index a44a2321ed..835b678f4e 100644
--- a/lib/dns/rdata/generic/rp_17.c
+++ b/lib/dns/rdata/generic/rp_17.c
@@ -195,7 +195,6 @@ fromstruct_rp(ARGS_FROMSTRUCT) {
 
 static inline isc_result_t
 tostruct_rp(ARGS_TOSTRUCT) {
-	isc_result_t result;
 	isc_region_t region;
 	dns_rdata_rp_t *rp = target;
 	dns_name_t name;
@@ -212,23 +211,13 @@ tostruct_rp(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&rp->mail, NULL);
-	RETERR(name_duporclone(&name, mctx, &rp->mail));
+	name_duporclone(&name, mctx, &rp->mail);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&rp->text, NULL);
-	result = name_duporclone(&name, mctx, &rp->text);
-	if (result != ISC_R_SUCCESS) {
-		goto cleanup;
-	}
-
+	name_duporclone(&name, mctx, &rp->text);
 	rp->mctx = mctx;
 	return (ISC_R_SUCCESS);
-
-cleanup:
-	if (mctx != NULL) {
-		dns_name_free(&rp->mail, mctx);
-	}
-	return (ISC_R_NOMEMORY);
 }
 
 static inline void
diff --git a/lib/dns/rdata/generic/rrsig_46.c b/lib/dns/rdata/generic/rrsig_46.c
index e6ef8725d1..1fffc5758a 100644
--- a/lib/dns/rdata/generic/rrsig_46.c
+++ b/lib/dns/rdata/generic/rrsig_46.c
@@ -491,7 +491,7 @@ tostruct_rrsig(ARGS_TOSTRUCT) {
 	dns_name_init(&signer, NULL);
 	dns_name_fromregion(&signer, &sr);
 	dns_name_init(&sig->signer, NULL);
-	RETERR(name_duporclone(&signer, mctx, &sig->signer));
+	name_duporclone(&signer, mctx, &sig->signer);
 	isc_region_consume(&sr, name_length(&sig->signer));
 
 	/*
diff --git a/lib/dns/rdata/generic/rt_21.c b/lib/dns/rdata/generic/rt_21.c
index 08fb097bf3..32efc23e24 100644
--- a/lib/dns/rdata/generic/rt_21.c
+++ b/lib/dns/rdata/generic/rt_21.c
@@ -211,7 +211,7 @@ tostruct_rt(ARGS_TOSTRUCT) {
 	isc_region_consume(&region, 2);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&rt->host, NULL);
-	RETERR(name_duporclone(&name, mctx, &rt->host));
+	name_duporclone(&name, mctx, &rt->host);
 
 	rt->mctx = mctx;
 	return (ISC_R_SUCCESS);
diff --git a/lib/dns/rdata/generic/sig_24.c b/lib/dns/rdata/generic/sig_24.c
index fc9279eebe..df89fb42a5 100644
--- a/lib/dns/rdata/generic/sig_24.c
+++ b/lib/dns/rdata/generic/sig_24.c
@@ -483,7 +483,7 @@ tostruct_sig(ARGS_TOSTRUCT) {
 	dns_name_init(&signer, NULL);
 	dns_name_fromregion(&signer, &sr);
 	dns_name_init(&sig->signer, NULL);
-	RETERR(name_duporclone(&signer, mctx, &sig->signer));
+	name_duporclone(&signer, mctx, &sig->signer);
 	isc_region_consume(&sr, name_length(&sig->signer));
 
 	/*
diff --git a/lib/dns/rdata/generic/soa_6.c b/lib/dns/rdata/generic/soa_6.c
index c9fbc10afe..a6b687c0d4 100644
--- a/lib/dns/rdata/generic/soa_6.c
+++ b/lib/dns/rdata/generic/soa_6.c
@@ -302,7 +302,6 @@ tostruct_soa(ARGS_TOSTRUCT) {
 	isc_region_t region;
 	dns_rdata_soa_t *soa = target;
 	dns_name_t name;
-	isc_result_t result;
 
 	REQUIRE(rdata->type == dns_rdatatype_soa);
 	REQUIRE(soa != NULL);
@@ -318,15 +317,12 @@ tostruct_soa(ARGS_TOSTRUCT) {
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_init(&soa->origin, NULL);
-	RETERR(name_duporclone(&name, mctx, &soa->origin));
+	name_duporclone(&name, mctx, &soa->origin);
 
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_init(&soa->contact, NULL);
-	result = name_duporclone(&name, mctx, &soa->contact);
-	if (result != ISC_R_SUCCESS) {
-		goto cleanup;
-	}
+	name_duporclone(&name, mctx, &soa->contact);
 
 	soa->serial = uint32_fromregion(&region);
 	isc_region_consume(&region, 4);
@@ -344,12 +340,6 @@ tostruct_soa(ARGS_TOSTRUCT) {
 
 	soa->mctx = mctx;
 	return (ISC_R_SUCCESS);
-
-cleanup:
-	if (mctx != NULL) {
-		dns_name_free(&soa->origin, mctx);
-	}
-	return (ISC_R_NOMEMORY);
 }
 
 static inline void
diff --git a/lib/dns/rdata/generic/talink_58.c b/lib/dns/rdata/generic/talink_58.c
index 1682facae2..95e954bbff 100644
--- a/lib/dns/rdata/generic/talink_58.c
+++ b/lib/dns/rdata/generic/talink_58.c
@@ -162,7 +162,6 @@ tostruct_talink(ARGS_TOSTRUCT) {
 	isc_region_t region;
 	dns_rdata_talink_t *talink = target;
 	dns_name_t name;
-	isc_result_t result;
 
 	REQUIRE(rdata->type == dns_rdatatype_talink);
 	REQUIRE(talink != NULL);
@@ -178,24 +177,15 @@ tostruct_talink(ARGS_TOSTRUCT) {
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_init(&talink->prev, NULL);
-	RETERR(name_duporclone(&name, mctx, &talink->prev));
+	name_duporclone(&name, mctx, &talink->prev);
 
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 	dns_name_init(&talink->next, NULL);
-	result = name_duporclone(&name, mctx, &talink->next);
-	if (result != ISC_R_SUCCESS) {
-		goto cleanup;
-	}
+	name_duporclone(&name, mctx, &talink->next);
 
 	talink->mctx = mctx;
 	return (ISC_R_SUCCESS);
-
-cleanup:
-	if (mctx != NULL) {
-		dns_name_free(&talink->prev, mctx);
-	}
-	return (ISC_R_NOMEMORY);
 }
 
 static inline void
diff --git a/lib/dns/rdata/generic/tkey_249.c b/lib/dns/rdata/generic/tkey_249.c
index 6ba242789d..bc57b274e0 100644
--- a/lib/dns/rdata/generic/tkey_249.c
+++ b/lib/dns/rdata/generic/tkey_249.c
@@ -434,7 +434,7 @@ tostruct_tkey(ARGS_TOSTRUCT) {
 	dns_name_init(&alg, NULL);
 	dns_name_fromregion(&alg, &sr);
 	dns_name_init(&tkey->algorithm, NULL);
-	RETERR(name_duporclone(&alg, mctx, &tkey->algorithm));
+	name_duporclone(&alg, mctx, &tkey->algorithm);
 	isc_region_consume(&sr, name_length(&tkey->algorithm));
 
 	/*
diff --git a/lib/dns/rdata/in_1/a6_38.c b/lib/dns/rdata/in_1/a6_38.c
index 5828ddb39c..dd6c941276 100644
--- a/lib/dns/rdata/in_1/a6_38.c
+++ b/lib/dns/rdata/in_1/a6_38.c
@@ -371,7 +371,7 @@ tostruct_in_a6(ARGS_TOSTRUCT) {
 	if (a6->prefixlen != 0) {
 		dns_name_init(&name, NULL);
 		dns_name_fromregion(&name, &r);
-		RETERR(name_duporclone(&name, mctx, &a6->prefix));
+		name_duporclone(&name, mctx, &a6->prefix);
 	}
 	a6->mctx = mctx;
 	return (ISC_R_SUCCESS);
diff --git a/lib/dns/rdata/in_1/kx_36.c b/lib/dns/rdata/in_1/kx_36.c
index bfa8d71771..af45afb0d3 100644
--- a/lib/dns/rdata/in_1/kx_36.c
+++ b/lib/dns/rdata/in_1/kx_36.c
@@ -198,7 +198,7 @@ tostruct_in_kx(ARGS_TOSTRUCT) {
 
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&kx->exchange, NULL);
-	RETERR(name_duporclone(&name, mctx, &kx->exchange));
+	name_duporclone(&name, mctx, &kx->exchange);
 	kx->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/in_1/nsap-ptr_23.c b/lib/dns/rdata/in_1/nsap-ptr_23.c
index 9960ce818c..a16d1f2ea6 100644
--- a/lib/dns/rdata/in_1/nsap-ptr_23.c
+++ b/lib/dns/rdata/in_1/nsap-ptr_23.c
@@ -160,7 +160,7 @@ tostruct_in_nsap_ptr(ARGS_TOSTRUCT) {
 	dns_rdata_toregion(rdata, &region);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&nsap_ptr->owner, NULL);
-	RETERR(name_duporclone(&name, mctx, &nsap_ptr->owner));
+	name_duporclone(&name, mctx, &nsap_ptr->owner);
 	nsap_ptr->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/in_1/px_26.c b/lib/dns/rdata/in_1/px_26.c
index 02faa728bc..a642306723 100644
--- a/lib/dns/rdata/in_1/px_26.c
+++ b/lib/dns/rdata/in_1/px_26.c
@@ -248,7 +248,6 @@ tostruct_in_px(ARGS_TOSTRUCT) {
 	dns_rdata_in_px_t *px = target;
 	dns_name_t name;
 	isc_region_t region;
-	isc_result_t result;
 
 	REQUIRE(rdata->type == dns_rdatatype_px);
 	REQUIRE(rdata->rdclass == dns_rdataclass_in);
@@ -268,21 +267,14 @@ tostruct_in_px(ARGS_TOSTRUCT) {
 	dns_name_fromregion(&name, &region);
 
 	dns_name_init(&px->map822, NULL);
-	RETERR(name_duporclone(&name, mctx, &px->map822));
+	name_duporclone(&name, mctx, &px->map822);
 	isc_region_consume(&region, name_length(&px->map822));
 
 	dns_name_init(&px->mapx400, NULL);
-	result = name_duporclone(&name, mctx, &px->mapx400);
-	if (result != ISC_R_SUCCESS) {
-		goto cleanup;
-	}
+	name_duporclone(&name, mctx, &px->mapx400);
 
 	px->mctx = mctx;
-	return (result);
-
-cleanup:
-	dns_name_free(&px->map822, mctx);
-	return (ISC_R_NOMEMORY);
+	return (ISC_R_SUCCESS);
 }
 
 static inline void
diff --git a/lib/dns/rdata/in_1/srv_33.c b/lib/dns/rdata/in_1/srv_33.c
index 2a299cedf7..f0e72cf3fb 100644
--- a/lib/dns/rdata/in_1/srv_33.c
+++ b/lib/dns/rdata/in_1/srv_33.c
@@ -279,7 +279,7 @@ tostruct_in_srv(ARGS_TOSTRUCT) {
 	isc_region_consume(&region, 2);
 	dns_name_fromregion(&name, &region);
 	dns_name_init(&srv->target, NULL);
-	RETERR(name_duporclone(&name, mctx, &srv->target));
+	name_duporclone(&name, mctx, &srv->target);
 	srv->mctx = mctx;
 	return (ISC_R_SUCCESS);
 }
diff --git a/lib/dns/rdata/in_1/svcb_64.c b/lib/dns/rdata/in_1/svcb_64.c
index e1cf27c1b7..068f93619b 100644
--- a/lib/dns/rdata/in_1/svcb_64.c
+++ b/lib/dns/rdata/in_1/svcb_64.c
@@ -1013,7 +1013,7 @@ generic_tostruct_in_svcb(ARGS_TOSTRUCT) {
 	dns_name_fromregion(&name, &region);
 	isc_region_consume(&region, name_length(&name));
 
-	RETERR(name_duporclone(&name, mctx, &svcb->svcdomain));
+	name_duporclone(&name, mctx, &svcb->svcdomain);
 	svcb->svclen = region.length;
 	svcb->svc = mem_maybedup(mctx, region.base, region.length);