[PATCH 4.19 03/38] gpio: mockup: fix resource leak in error path

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>

commit 1b02d9e770cd7087f34c743f85ccf5ea8372b047 upstream.

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: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpio/gpio-mockup.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -367,6 +367,7 @@ static int __init gpio_mockup_init(void)
 	err = platform_driver_register(&gpio_mockup_driver);
 	if (err) {
 		gpio_mockup_err("error registering platform driver\n");
+		debugfs_remove_recursive(gpio_mockup_dbg_dir);
 		return err;
 	}
 
@@ -386,6 +387,7 @@ static int __init gpio_mockup_init(void)
 			gpio_mockup_err("error registering device");
 			platform_driver_unregister(&gpio_mockup_driver);
 			gpio_mockup_unregister_pdevs();
+			debugfs_remove_recursive(gpio_mockup_dbg_dir);
 			return PTR_ERR(pdev);
 		}