PCI: insert busn_res in pci_create_root_bus()

That busn_res is from resources list.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 7662ab7..59011ce 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1684,7 +1684,10 @@
 		list_move_tail(&window->list, &bridge->windows);
 		res = window->res;
 		offset = window->offset;
-		pci_bus_add_resource(b, res, 0);
+		if (res->flags & IORESOURCE_BUS)
+			pci_bus_insert_busn_res(b, bus, res->end);
+		else
+			pci_bus_add_resource(b, res, 0);
 		if (offset) {
 			if (resource_type(res) == IORESOURCE_IO)
 				fmt = " (bus address [%#06llx-%#06llx])";