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/appletalk/ltpc.c b/drivers/net/appletalk/ltpc.c
index adc0755..e69eead 100644
--- a/drivers/net/appletalk/ltpc.c
+++ b/drivers/net/appletalk/ltpc.c
@@ -727,7 +727,7 @@
 
 	if (ltc->command != LT_RCVLAP) {
 		printk("unknown command 0x%02x from ltpc card\n",ltc->command);
-		return(-1);
+		return -1;
 	}
 	dnode = ltc->dnode;
 	snode = ltc->snode;