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/forcedeth.c b/drivers/net/forcedeth.c
index 6a44fe4..ddac63c 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -4620,7 +4620,7 @@
 static u32 nv_get_rx_csum(struct net_device *dev)
 {
 	struct fe_priv *np = netdev_priv(dev);
-	return (np->rx_csum) != 0;
+	return np->rx_csum != 0;
 }
 
 static int nv_set_rx_csum(struct net_device *dev, u32 data)