HID: wacom: Delete an unnecessary check before kobject_put()

The kobject_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/wacom_sys.c

@@ -1353,8 +1353,7 @@ static void wacom_clean_inputs(struct wacom *wacom)
 		else
 			input_free_device(wacom->wacom_wac.pad_input);
 	}
-	if (wacom->remote_dir)
-		kobject_put(wacom->remote_dir);
+	kobject_put(wacom->remote_dir);
 	wacom->wacom_wac.pen_input = NULL;
 	wacom->wacom_wac.touch_input = NULL;
 	wacom->wacom_wac.pad_input = NULL;