[PATCH] [v2] PCI: rcar: Fix runtime PM imbalance on error

[Dinghao Liu]

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

Signed-off-by: Dinghao Liu <dinghao....@zju.edu.cn>
---

Changelog:

v2: - Remove unnecessary 'err_pm_put' label.
      Refine commit message.
---
 drivers/pci/controller/pcie-rcar.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pcie-rcar.c 
b/drivers/pci/controller/pcie-rcar.c
index 759c6542c5c8..f9595ab54bc4 100644
--- a/drivers/pci/controller/pcie-rcar.c
+++ b/drivers/pci/controller/pcie-rcar.c
@@ -1143,7 +1143,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)
        err = rcar_pcie_get_resources(pcie);
        if (err < 0) {
                dev_err(dev, "failed to request resources: %d\n", err);
-               goto err_pm_put;
+               goto err_pm_disable;
        }
 
        err = clk_prepare_enable(pcie->bus_clk);
@@ -1206,10 +1206,8 @@ static int rcar_pcie_probe(struct platform_device *pdev)
        irq_dispose_mapping(pcie->msi.irq2);
        irq_dispose_mapping(pcie->msi.irq1);
 
-err_pm_put:
-       pm_runtime_put(dev);
-
 err_pm_disable:
+       pm_runtime_put(dev);
        pm_runtime_disable(dev);
        pci_free_resource_list(&pcie->resources);
 
-- 
2.17.1