[PATCH v10 02/10] PCI: dwc: Propagate error from dma_mapping_error()

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If dma mapping fails, dma_mapping_error() will return an error.
Propagate it to the dw_pcie_host_init() return value rather than
incorrectly returning 0 in this case.

Fixes: 07940c369a6b ("PCI: dwc: Fix MSI page leakage in suspend/resume")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
 drivers/pci/controller/dwc/pcie-designware-host.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 2fa86f32d964..a9a31e9e7b6e 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -396,8 +396,9 @@ 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)) {
-				dev_err(pci->dev, "Failed to map MSI data\n");
+			ret = dma_mapping_error(pci->dev, pp->msi_data);
+			if (ret) {
+				dev_err(pci->dev, "Failed to map MSI data: %d\n", ret);
 				pp->msi_data = 0;
 				goto err_free_msi;
 			}
-- 
2.35.1




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