mmc: meson-gx: 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.

Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20230727070051.17778-19-frank.li@vivo.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/meson-gx-mmc.c

@@ -1294,7 +1294,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int meson_mmc_remove(struct platform_device *pdev)
+static void meson_mmc_remove(struct platform_device *pdev)
 {
 	struct meson_host *host = dev_get_drvdata(&pdev->dev);
 
@@ -1305,8 +1305,6 @@ static int meson_mmc_remove(struct platform_device *pdev)
 	free_irq(host->irq, host);
 
 	clk_disable_unprepare(host->mmc_clk);
-
-	return 0;
 }
 
 static const struct meson_mmc_data meson_gx_data = {
@@ -1337,7 +1335,7 @@ MODULE_DEVICE_TABLE(of, meson_mmc_of_match);
 
 static struct platform_driver meson_mmc_driver = {
 	.probe		= meson_mmc_probe,
-	.remove		= meson_mmc_remove,
+	.remove_new	= meson_mmc_remove,
 	.driver		= {
 		.name = DRIVER_NAME,
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,