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/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 0ec4ef2..4e0ce91 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -826,7 +826,7 @@
 	tx_ring->total_packets += total_packets;
 	tx_ring->stats.packets += total_packets;
 	tx_ring->stats.bytes += total_bytes;
-	return (count < tx_ring->work_limit);
+	return count < tx_ring->work_limit;
 }
 
 #ifdef CONFIG_IXGBE_DCA