iommu/amd: Remove queue_release() function

#define queue_ring_for_each(i, q) \

	for (i = (q)->head; i != (q)->tail; i = (i + 1) % FLUSH_QUEUE_SIZE)

static void queue_release(struct dma_ops_domain *dom,

			  struct flush_queue *queue)

{

	unsigned i;

	assert_spin_locked(&queue->lock);

	queue_ring_for_each(i, queue)

		free_iova_fast(&dom->iovad,

			       queue->entries[i].iova_pfn,

			       queue->entries[i].pages);

	queue->head = queue->tail = 0;

}

static inline unsigned queue_ring_add(struct flush_queue *queue)

{

	unsigned idx = queue->tail;

	queue = get_cpu_ptr(dom->flush_queue);

	spin_lock_irqsave(&queue->lock, flags);

	queue_ring_free_flushed(dom, queue);

	if (queue_ring_full(queue)) {

	/*

	 * When ring-queue is full, flush the entries from the IOTLB so

	 * that we can free all entries with queue_ring_free_flushed()

	 * below.

	 */

	if (queue_ring_full(queue))

		dma_ops_domain_flush_tlb(dom);

		queue_release(dom, queue);

	}

	queue_ring_free_flushed(dom, queue);

	idx = queue_ring_add(queue);