[U-Boot] [PATCH 1/1] pci: pci_mvebu: fix bus enumeration if some buses have empty slots

[Marek Behún]

The documentation for the uclass_next_device says this:

  @devp: On entry, pointer to device to lookup. On exit, returns pointer
  to the next device in the uclass if no error occurred, or NULL if
  there is no next device, or an error occurred with that next device.

But this is useless, because if an error occured with that next device,
the iteration stops and devices which should work won't be probed.