phy: allwinner: phy-sun4i-usb: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20230307115900.2293120-2-u.kleine-koenig@pengutronix.deSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/allwinner/phy-sun4i-usb.c

@@ -698,7 +698,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
 	return data->phys[args->args[0]].phy;
 }
 
-static int sun4i_usb_phy_remove(struct platform_device *pdev)
+static void sun4i_usb_phy_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
@@ -711,8 +711,6 @@ static int sun4i_usb_phy_remove(struct platform_device *pdev)
 		devm_free_irq(dev, data->vbus_det_irq, data);
 
 	cancel_delayed_work_sync(&data->detect);
-
-	return 0;
 }
 
 static const unsigned int sun4i_usb_phy0_cable[] = {
@@ -1054,7 +1052,7 @@ MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
 
 static struct platform_driver sun4i_usb_phy_driver = {
 	.probe	= sun4i_usb_phy_probe,
-	.remove	= sun4i_usb_phy_remove,
+	.remove_new = sun4i_usb_phy_remove,
 	.driver = {
 		.of_match_table	= sun4i_usb_phy_of_match,
 		.name  = "sun4i-usb-phy",