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/chelsio/vsc7326.c b/drivers/net/chelsio/vsc7326.c
index c844111..106a590 100644
--- a/drivers/net/chelsio/vsc7326.c
+++ b/drivers/net/chelsio/vsc7326.c
@@ -255,7 +255,7 @@
 	else if ((result & (1 << 8)) != 0x0)
 		pr_err("bist read error: 0x%x\n", result);
 
-	return (result & 0xff);
+	return result & 0xff;
 }
 
 static int bist_wr(adapter_t *adapter, int moduleid, int address, int value)