staging: et131x: Remove unecessary *etdev NULL check in et1310_phy_init()

It is impossible to get to this function with the pointer being NULL.
Tested on an ET-131x device.
Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/et131x/et1310_phy.c

@@ -908,9 +908,6 @@ void et1310_phy_init(struct et131x_adapter *etdev)
 {
 	u16 data, index;
 
-	if (etdev == NULL)
-		return;
-
 	/* get the identity (again ?) */
 	et131x_mii_read(etdev, PHY_ID_1, &data);
 	et131x_mii_read(etdev, PHY_ID_2, &data);