staging: pi433: Reorder pi433_exit cleanup calls.

debugfs_remove was called out of order.
Ensure pi433 init & exit have reverse function calls order.

Signed-off-by: Shahar Avidar <ikobh7@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20240405074000.3481217-8-ikobh7@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>