PCI/P2PDMA: Use for_each_pci_dev() helper

Use for_each_pci_dev() instead of open-coding it.  No functional change.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Yang Yingliang <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Logan Gunthorpe <[email protected]>

Author: Yang Yingliang

drivers/pci/p2pdma.c

@@ -649,7 +649,7 @@ struct pci_dev *pci_p2pmem_find_many(struct device **clients, int num_clients)
 	if (!closest_pdevs)
 		return NULL;
 
-	while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
+	for_each_pci_dev(pdev) {
 		if (!pci_has_p2pmem(pdev))
 			continue;