PCI: brcmstb: 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/20230321193208.366561-5-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>

drivers/pci/controller/pcie-brcmstb.c

@@ -1396,16 +1396,14 @@ static void __brcm_pcie_remove(struct brcm_pcie *pcie)
 	clk_disable_unprepare(pcie->clk);
 }
 
-static int brcm_pcie_remove(struct platform_device *pdev)
+static void brcm_pcie_remove(struct platform_device *pdev)
 {
 	struct brcm_pcie *pcie = platform_get_drvdata(pdev);
 	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
 
 	pci_stop_root_bus(bridge->bus);
 	pci_remove_root_bus(bridge->bus);
 	__brcm_pcie_remove(pcie);
-
-	return 0;
 }
 
 static const int pcie_offsets[] = {
@@ -1612,7 +1610,7 @@ static const struct dev_pm_ops brcm_pcie_pm_ops = {
 
 static struct platform_driver brcm_pcie_driver = {
 	.probe = brcm_pcie_probe,
-	.remove = brcm_pcie_remove,
+	.remove_new = brcm_pcie_remove,
 	.driver = {
 		.name = "brcm-pcie",
 		.of_match_table = brcm_pcie_match,