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

drivers/staging/pi433/pi433_if.c

@@ -1425,9 +1425,9 @@ module_init(pi433_init);
 static void __exit pi433_exit(void)
 {
 	spi_unregister_driver(&pi433_spi_driver);
+	debugfs_remove(root_dir);
 	class_unregister(&pi433_class);
 	unregister_chrdev(MAJOR(pi433_devt), pi433_spi_driver.driver.name);
-	debugfs_remove(root_dir);
 }
 module_exit(pi433_exit);