SUNRPC: Fix missing release socket in rpc_sockname()

socket dynamically created is not released when getting an unintended
address family type in rpc_sockname(), direct to out_release for calling
sock_release().

Fixes: 2e738fdc ("SUNRPC: Add API to acquire source address")
Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

net/sunrpc/clnt.c

@@ -1442,7 +1442,7 @@ static int rpc_sockname(struct net *net, struct sockaddr *sap, size_t salen,
 		break;
 	default:
 		err = -EAFNOSUPPORT;
-		goto out;
+		goto out_release;
 	}
 	if (err < 0) {
 		dprintk("RPC:       can't bind UDP socket (%d)\n", err);