[PATCH] PCI: fix ptr_ret.cocci warnings

[kbuild test robot]

From: kbuild test robot <lkp@xxxxxxxxx>

drivers/pci/controller/dwc/pci-exynos.c:95:1-3: WARNING: PTR_ERR_OR_ZERO can be used


 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Fixes: 191d6f91f283 ("PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist")
CC: Palmer Dabbelt <palmer@xxxxxxxxxx>
Signed-off-by: kbuild test robot <lkp@xxxxxxxxx>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   36487907f34131c7e3df5b1e6b30b4e3dfcdc0af
commit: 191d6f91f283dfb007499bb8529d54c3ac434bd7 PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist

 pci-exynos.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -92,10 +92,7 @@ static int exynos5440_pcie_get_mem_resou
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ep->mem_res->elbi_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(ep->mem_res->elbi_base))
-		return PTR_ERR(ep->mem_res->elbi_base);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(ep->mem_res->elbi_base);
 }
 
 static int exynos5440_pcie_get_clk_resources(struct exynos_pcie *ep)