PCI: altera: Remove redundant platform_get_resource() return value check

devm_ioremap_resource() fails gracefully when given a NULL resource
pointer, so we don't need to check separately for failure from
platform_get_resource_byname().  Remove the redundant check.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/host/pcie-altera.c

@@ -74,7 +74,7 @@
 
 struct altera_pcie {
 	struct platform_device	*pdev;
-	void __iomem		*cra_base;
+	void __iomem		*cra_base;	/* DT Cra */
 	int			irq;
 	u8			root_bus_nr;
 	struct irq_domain	*irq_domain;
@@ -555,11 +555,6 @@ static int altera_pcie_parse_dt(struct altera_pcie *pcie)
 	struct resource *cra;
 
 	cra = platform_get_resource_byname(pdev, IORESOURCE_MEM, "Cra");
-	if (!cra) {
-		dev_err(dev, "no Cra memory resource defined\n");
-		return -ENODEV;
-	}
-
 	pcie->cra_base = devm_ioremap_resource(dev, cra);
 	if (IS_ERR(pcie->cra_base)) {
 		dev_err(dev, "failed to map cra memory\n");