PCI: keystone: Don't dereference possible NULL pointer
Check for failure from platform_get_resource() (this check actually happens
inside devm_ioremap_resource()) before dereferencing the pointer returned
from platform_get_resource().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/host/pci-keystone-dw.c
index 66d8ea4..f34892e 100644
--- a/drivers/pci/host/pci-keystone-dw.c
+++ b/drivers/pci/host/pci-keystone-dw.c
@@ -496,11 +496,12 @@
/* Index 1 is the application reg. space address */
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- ks_pcie->app = *res;
ks_pcie->va_app_base = devm_ioremap_resource(pp->dev, res);
if (IS_ERR(ks_pcie->va_app_base))
return PTR_ERR(ks_pcie->va_app_base);
+ ks_pcie->app = *res;
+
/* Create legacy IRQ domain */
ks_pcie->legacy_irq_domain =
irq_domain_add_linear(ks_pcie->legacy_intc_np,