[PATCH v2] PCI: dwc: fix error return code in dw_pcie_host_init()

[Wang Hai]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 07940c369a6b ("PCI: dwc: Fix MSI page leakage in suspend/resume")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wang Hai <wangha...@huawei.com>
---
v1->v2: just add 'ret = xxx'
 drivers/pci/controller/dwc/pcie-designware-host.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c 
b/drivers/pci/controller/dwc/pcie-designware-host.c
index 44c2a6572199..42d8116a4a00 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -392,7 +392,8 @@ int dw_pcie_host_init(struct pcie_port *pp)
                                                      sizeof(pp->msi_msg),
                                                      DMA_FROM_DEVICE,
                                                      DMA_ATTR_SKIP_CPU_SYNC);
-                       if (dma_mapping_error(pci->dev, pp->msi_data)) {
+                       ret = dma_mapping_error(pci->dev, pp->msi_data);
+                       if (ret) {
                                dev_err(pci->dev, "Failed to map MSI data\n");
                                pp->msi_data = 0;
                                goto err_free_msi;
-- 
2.17.1