drivers/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>

drivers/net/irda/smsc-ircc2.c

@@ -2051,7 +2051,7 @@ static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
  */
 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self)
 {
-	return (self->rx_buff.state != OUTSIDE_FRAME);
+	return self->rx_buff.state != OUTSIDE_FRAME;
 }