gpio: mockup: fix resource leak in error path

If the module init function fails after creating the debugs directory,
it's never removed. Add proper cleanup calls to avoid this resource
leak.

Fixes: 9202ba2397d1 ("gpio: mockup: implement event injecting over debugfs")
Cc: <[email protected]>
Signed-off-by: Bartosz Golaszewski <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
1 file changed