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/sis900.c b/drivers/net/sis900.c
index ffdd859..5818368 100644
--- a/drivers/net/sis900.c
+++ b/drivers/net/sis900.c
@@ -832,7 +832,7 @@
 	outl(0, ee_addr);
 	eeprom_delay();
 
-	return (retval);
+	return retval;
 }
 
 /* Read and write the MII management registers using software-generated
@@ -2247,9 +2247,9 @@
 
 	/* leave 8 or 7 most siginifant bits */
 	if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
-		return ((int)(crc >> 24));
+		return (int)(crc >> 24);
 	else
-		return ((int)(crc >> 25));
+		return (int)(crc >> 25);
 }
 
 /**