net: ravb: Fix reset GPIO handling

Fix handling of the reset GPIO. Drop the _nodev() suffix from the
gpio_request_by_name() call as there is now a proper DM capable
GPIO driver. Also check if the GPIO is valid before freeing it in
remove path, otherwise U-Boot will crash.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

drivers/net/ravb.c

@@ -492,8 +492,8 @@ static int ravb_probe(struct udevice *dev)
 	if (ret < 0)
 		goto err_mdio_alloc;
 
-	gpio_request_by_name_nodev(dev_ofnode(dev), "reset-gpios", 0,
-				   &eth->reset_gpio, GPIOD_IS_OUT);
+	gpio_request_by_name(dev, "reset-gpios", 0, &eth->reset_gpio,
+			     GPIOD_IS_OUT);
 
 	mdiodev = mdio_alloc();
 	if (!mdiodev) {
@@ -528,7 +528,8 @@ static int ravb_remove(struct udevice *dev)
 	free(eth->phydev);
 	mdio_unregister(eth->bus);
 	mdio_free(eth->bus);
-	dm_gpio_free(dev, &eth->reset_gpio);
+	if (dm_gpio_is_valid(&eth->reset_gpio))
+		dm_gpio_free(dev, &eth->reset_gpio);
 	unmap_physmem(eth->iobase, MAP_NOCACHE);
 
 	return 0;