PCI: correct resource number in debug output

If pci_request_region fails, make the warning include the resource number,
not the resource number + 1.

drivers/pci/pci.c

@@ -1114,7 +1114,7 @@ int pci_request_region(struct pci_dev *pdev, int bar, const char *res_name)
 
 err_out:
 	dev_warn(&pdev->dev, "BAR %d: can't reserve %s region [%#llx-%#llx]\n",
-		bar + 1, /* PCI BAR # */
+		 bar,
 		 pci_resource_flags(pdev, bar) & IORESOURCE_IO ? "I/O" : "mem",
 		 (unsigned long long)pci_resource_start(pdev, bar),
 		 (unsigned long long)pci_resource_end(pdev, bar));