PCI: Increment max correctly in pci_scan_bridge()
This patch fixes two small issues:
- If pci_add_new_bus() fails, max must not be incremented. Otherwise
an incorrect value is returned from pci_scan_bridge().
- If the bus is already present, max must be incremented. I think
that this case should only be hit if we trigger a manual rescan of a
CardBus bridge.
Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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