dlm: uninitialized variable on error in dlm_listen_for_all()

commit 1f4f10845e upstream.

The "sock" variable is not initialized on this error path.

Cc: stable@vger.kernel.org
Fixes: 2dc6b1158c ("fs: dlm: introduce generic listen")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/dlm/lowcomms.c

@@ -1776,7 +1776,7 @@ static int dlm_listen_for_all(void)
 				  SOCK_STREAM, dlm_proto_ops->proto, &sock);
 	if (result < 0) {
 		log_print("Can't create comms socket, check SCTP is loaded");
-		goto out;
+		return result;
 	}
 
 	sock_set_mark(sock->sk, dlm_config.ci_mark);