PCI: Assign CardBus bus number only during the second pass

Right now the CardBus code in pci_scan_bridge() is executed during both
passes. Since we always allocate the bus number ourselves it makes sense
to put it into the second pass.

Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 511a8f6..5dc8e1a 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -831,7 +831,7 @@
 		 * do in the second pass.
 		 */
 		if (!pass) {
-			if (pcibios_assign_all_busses() || broken)
+			if (pcibios_assign_all_busses() || broken || is_cardbus)
 				/* Temporarily disable forwarding of the
 				   configuration cycles on all bridges in
 				   this bus segment to avoid possible