tipc: Let tipc_release() return 0

net/tipc/socket.c: In function ‘tipc_release’:
net/tipc/socket.c:352: warning: ‘res’ is used uninitialized in this function

Introduced by commit 24be34b5 ("tipc:
eliminate upcall function pointers between port and socket"), which
removed the sole initializer of "res".

Just return 0 to fix it.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/tipc/socket.c

@@ -301,7 +301,6 @@ static int tipc_release(struct socket *sock)
 	struct tipc_sock *tsk;
 	struct tipc_port *port;
 	struct sk_buff *buf;
-	int res;
 
 	/*
 	 * Exit if socket isn't fully initialized (occurs when a failed accept()
@@ -349,7 +348,7 @@ static int tipc_release(struct socket *sock)
 	sock_put(sk);
 	sock->sk = NULL;
 
-	return res;
+	return 0;
 }
 
 /**