tipc: Provide correct error code for unsupported connect() operation

Modify TIPC to return EOPNOTSUPP if an application attempts to perform
 a non-blocking connect() operation, which is not supported by TIPC.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/socket.c

@@ -1380,7 +1380,7 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
 	/* For now, TIPC does not support the non-blocking form of connect() */
 
 	if (flags & O_NONBLOCK) {
-		res = -EWOULDBLOCK;
+		res = -EOPNOTSUPP;
 		goto exit;
 	}