stm class: Do not leak the chrdev in error path

Currently, the error path of stm_register_device() forgets to unregister
the chrdev. Fix this.

Reported-by: Alan Cox <alan.cox@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Laurent Fert <laurent.fert@intel.com>
This commit is contained in:
Alexander Shishkin 2016-03-04 16:36:10 +02:00
commit cbe4a61d1d