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/nsc-ircc.c

@@ -1348,7 +1348,7 @@ static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 speed)
 	outb(bank, iobase+BSR);
 
 	/* Make sure interrupt handlers keep the proper interrupt mask */
-	return(ier);
+	return ier;
 }
 
 /*