PCI: rcar: Fix runtime PM imbalance on error

pm_runtime_get_sync() increments the runtime PM usage counter even
when the call returns an error code. Thus a corresponding decrement is
needed on the error handling path to keep the counter balanced.

Link: https://lore.kernel.org/r/20200709064356.8800-1-dinghao.liu@zju.edu.cn
Fixes: 0df6150e ("PCI: rcar: Use runtime PM to control controller clock")
Signed-off-by: NDinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

drivers/pci/controller/pcie-rcar-host.c

@@ -986,7 +986,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)
 	err = pm_runtime_get_sync(pcie->dev);
 	if (err < 0) {
 		dev_err(pcie->dev, "pm_runtime_get_sync failed\n");
-		goto err_pm_disable;
+		goto err_pm_put;
 	}
 
 	err = rcar_pcie_get_resources(host);
@@ -1057,8 +1057,6 @@ static int rcar_pcie_probe(struct platform_device *pdev)
 
 err_pm_put:
 	pm_runtime_put(dev);
-
-err_pm_disable:
 	pm_runtime_disable(dev);
 	pci_free_resource_list(&host->resources);