af_unix: coding style: remove one level of indentation in unix_shutdown()

Signed-off-by: NAlban Crequy <alban.crequy@collabora.co.uk>
Reviewed-by: NIan Molton <ian.molton@collabora.co.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/unix/af_unix.c

@@ -1984,7 +1984,9 @@ static int unix_shutdown(struct socket *sock, int mode)
 
 	mode = (mode+1)&(RCV_SHUTDOWN|SEND_SHUTDOWN);
 
-	if (mode) {
+	if (!mode)
+		return 0;
+
 	unix_state_lock(sk);
 	sk->sk_shutdown |= mode;
 	other = unix_peer(sk);
@@ -2013,7 +2015,7 @@ static int unix_shutdown(struct socket *sock, int mode)
 	}
 	if (other)
 		sock_put(other);
-	}
+
 	return 0;
 }