kthread_init_worker(&md->kworker);
md->kworker_task = kthread_run(kthread_worker_fn, &md->kworker,
"kdmwork-%s", dm_device_name(md));
- if (IS_ERR(md->kworker_task))
- return PTR_ERR(md->kworker_task);
+ if (IS_ERR(md->kworker_task)) {
+ int error = PTR_ERR(md->kworker_task);
+ md->kworker_task = NULL;
+ return error;
+ }
elv_register_queue(md->queue);