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>
diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index 7a3720f..17d408f 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -379,14 +379,14 @@
 	if (request_irq(irq, sca_intr, 0, devname, card)) {
 		printk(KERN_ERR "n2: could not allocate IRQ\n");
 		n2_destroy_card(card);
-		return(-EBUSY);
+		return -EBUSY;
 	}
 	card->irq = irq;
 
 	if (!request_mem_region(winbase, USE_WINDOWSIZE, devname)) {
 		printk(KERN_ERR "n2: could not request RAM window\n");
 		n2_destroy_card(card);
-		return(-EBUSY);
+		return -EBUSY;
 	}
 	card->phy_winbase = winbase;
 	card->winbase = ioremap(winbase, USE_WINDOWSIZE);