net: return operator cleanup

Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/irda/irlap.h

@@ -282,7 +282,7 @@ static inline int irlap_is_primary(struct irlap_cb *self)
 	default:
 		ret = -1;
 	}
-	return(ret);
+	return ret;
 }
 
 /* Clear a pending IrLAP disconnect. - Jean II */