finish_device_resume() in the hub driver isn't careful always to return
a negative code in all the error pathways.  It also doesn't return 0 in
all the success pathways.  This patch (as724) fixes the behavior.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>