PCI: altera-msi: 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.

Link: https://lore.kernel.org/linux-pci/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Krzysztof Wilczyński <[email protected]>

Author: Uwe Kleine-König

drivers/pci/controller/pcie-altera-msi.c

@@ -197,7 +197,7 @@ static void altera_free_domains(struct altera_msi *msi)
 	irq_domain_remove(msi->inner_domain);
 }
 
-static int altera_msi_remove(struct platform_device *pdev)
+static void altera_msi_remove(struct platform_device *pdev)
 {
 	struct altera_msi *msi = platform_get_drvdata(pdev);
 
@@ -207,7 +207,6 @@ static int altera_msi_remove(struct platform_device *pdev)
 	altera_free_domains(msi);
 
 	platform_set_drvdata(pdev, NULL);
-	return 0;
 }
 
 static int altera_msi_probe(struct platform_device *pdev)
@@ -275,7 +274,7 @@ static struct platform_driver altera_msi_driver = {
 		.of_match_table = altera_msi_of_match,
 	},
 	.probe = altera_msi_probe,
-	.remove = altera_msi_remove,
+	.remove_new = altera_msi_remove,
 };
 
 static int __init altera_msi_init(void)