s390/pci: PCI_IOV_RESOURCES loop refactoring in zpci_map_resources

This patch alters the for loop iteration scheme in zpci_map_resources
to make it more usual. Thus, the patch generalizes the style for
PCI_IOV_RESOURCES iteration and improves readability.

Link: http://lkml.kernel.org/r/20190806160137.29275-1-efremov@linux.comSigned-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

arch/s390/pci/pci.c

@@ -431,13 +431,13 @@ static void zpci_map_resources(struct pci_dev *pdev)
 	}
 
 #ifdef CONFIG_PCI_IOV
-	i = PCI_IOV_RESOURCES;
+	for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
+		int bar = i + PCI_IOV_RESOURCES;
 
-	for (; i < PCI_SRIOV_NUM_BARS + PCI_IOV_RESOURCES; i++) {
-		len = pci_resource_len(pdev, i);
+		len = pci_resource_len(pdev, bar);
 		if (!len)
 			continue;
-		pdev->resource[i].parent = &iov_res;
+		pdev->resource[bar].parent = &iov_res;
 	}
 #endif
 }