HID: wacom: fix kobject reference count leak

JIRA: https://issues.redhat.com/browse/RHEL-102058
Upstream Status: v6.16

commit 85a720f
Author: Qasim Ijaz <[email protected]>
Date:   Fri Jun 6 19:49:59 2025 +0100

    HID: wacom: fix kobject reference count leak

    When sysfs_create_files() fails in wacom_initialize_remotes() the error
    is returned and the cleanup action will not have been registered yet.

    As a result the kobject???s refcount is never dropped, so the
    kobject can never be freed leading to a reference leak.

    Fix this by calling kobject_put() before returning.

    Fixes: 83e6b40 ("HID: wacom: EKR: have the wacom resources dynamically allocated")
    Acked-by: Ping Cheng <[email protected]>
    Cc: [email protected]
    Signed-off-by: Qasim Ijaz <[email protected]>
    Signed-off-by: Jiri Kosina <[email protected]>

Signed-off-by: Benjamin Tissoires <[email protected]>

Author: bentiss

drivers/hid/wacom_sys.c

@@ -2057,6 +2057,7 @@ static int wacom_initialize_remotes(struct wacom *wacom)
 		hid_err(wacom->hdev,
 			"cannot create sysfs group err: %d\n", error);
 		kfifo_free(&remote->remote_fifo);
+		kobject_put(remote->remote_dir);
 		return error;
 	}