reset: gpio: fix double free in reset_add_gpio_aux_device() error path

When __auxiliary_device_add() fails, reset_add_gpio_aux_device()
calls auxiliary_device_uninit(adev).

The device release callback reset_gpio_aux_device_release() frees
adev, but the current error path then calls kfree(adev) again,
causing a double free.

Keep kfree(adev) for the auxiliary_device_init() failure path, but
avoid freeing adev after auxiliary_device_uninit().

Fixes: 5fc4e4c ("reset: gpio: use software nodes to setup the GPIO lookup")
Cc: [email protected]
Signed-off-by: Guangshuo Li <[email protected]>
Reviewed-by: Bartosz Golaszewski <[email protected]>
Signed-off-by: Philipp Zabel <[email protected]>

Author: lgs2513

drivers/reset/core.c

@@ -856,7 +856,6 @@ static int reset_add_gpio_aux_device(struct device *parent,
 	ret = __auxiliary_device_add(adev, "reset");
 	if (ret) {
 		auxiliary_device_uninit(adev);
-		kfree(adev);
 		return ret;
 	}