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/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 6355a1b..b7f15b3 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -368,7 +368,7 @@
 static u32 e1000_get_rx_csum(struct net_device *netdev)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
-	return (adapter->flags & FLAG_RX_CSUM_ENABLED);
+	return adapter->flags & FLAG_RX_CSUM_ENABLED;
 }
 
 static int e1000_set_rx_csum(struct net_device *netdev, u32 data)
@@ -389,7 +389,7 @@
 
 static u32 e1000_get_tx_csum(struct net_device *netdev)
 {
-	return ((netdev->features & NETIF_F_HW_CSUM) != 0);
+	return (netdev->features & NETIF_F_HW_CSUM) != 0;
 }
 
 static int e1000_set_tx_csum(struct net_device *netdev, u32 data)