firmware: qemu_fw_cfg: remove sysfs entries explicitly

Explicitly remove the file entries from sysfs before dropping the final
reference for symmetry reasons and for consistency with the rest of the
driver.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-5-johan@kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

drivers/firmware/qemu_fw_cfg.c

@@ -389,6 +389,7 @@ static void fw_cfg_sysfs_cache_cleanup(void)
 
 	list_for_each_entry_safe(entry, next, &fw_cfg_entry_cache, list) {
 		fw_cfg_sysfs_cache_delist(entry);
+		kobject_del(&entry->kobj);
 		kobject_put(&entry->kobj);
 	}
 }