[NETFILTER]: ctnetlink: fix leak in ctnetlink_create_conntrack error path

Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/netfilter/ip_conntrack_netlink.c

@@ -959,7 +959,7 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
 	if (cda[CTA_PROTOINFO-1]) {
 		err = ctnetlink_change_protoinfo(ct, cda);
 		if (err < 0)
-			return err;
+			goto err;
 	}
 
 #if defined(CONFIG_IP_NF_CONNTRACK_MARK)

net/netfilter/nf_conntrack_netlink.c

@@ -981,7 +981,7 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
 	if (cda[CTA_PROTOINFO-1]) {
 		err = ctnetlink_change_protoinfo(ct, cda);
 		if (err < 0)
-			return err;
+			goto err;
 	}
 
 #if defined(CONFIG_NF_CONNTRACK_MARK)