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/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 24ab8a4..4f3a3c0d 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1555,12 +1555,12 @@
 	 * valid  since MSI-X irqs are not shared */
 	if ((mgp->dev->real_num_tx_queues == 1) && (ss != mgp->ss)) {
 		napi_schedule(&ss->napi);
-		return (IRQ_HANDLED);
+		return IRQ_HANDLED;
 	}
 
 	/* make sure it is our IRQ, and that the DMA has finished */
 	if (unlikely(!stats->valid))
-		return (IRQ_NONE);
+		return IRQ_NONE;
 
 	/* low bit indicates receives are present, so schedule
 	 * napi poll handler */
@@ -1599,7 +1599,7 @@
 		myri10ge_check_statblock(mgp);
 
 	put_be32(htonl(3), ss->irq_claim + 1);
-	return (IRQ_HANDLED);
+	return IRQ_HANDLED;
 }
 
 static int