Essential Products - PH-1 9.0 - Developer preview 2

USB: core: only clean up what we allocated

When cleaning up the configurations, make sure we only free the number
of configurations and interfaces that we could have allocated.

Change-Id: I6f19c372f499b7becc39e31b9f80b17f6659ec81
Reported-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>