The driver misses calling destroy_workqueue in remove like what is done
when probe fails.
Add the missed calls to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 
        cancel_work_sync(&card->event_work);
 
+       destroy_workqueue(card->event_wq);
        rsxx_destroy_dev(card);
        rsxx_dma_destroy(card);
+       destroy_workqueue(card->creg_ctrl.creg_wq);
 
        spin_lock_irqsave(&card->irq_lock, flags);
        rsxx_disable_ier_and_isr(card, CR_INTR_ALL);