iommu/dma: Remove __iommu_dma_free

We only have a single caller of this function left, so open code it there.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/dma-iommu.c

@@ -563,24 +563,6 @@ static struct page **__iommu_dma_get_pages(void *cpu_addr)
 	return area->pages;
 }
 
-/**
- * iommu_dma_free - Free a buffer allocated by iommu_dma_alloc_remap()
- * @dev: Device which owns this buffer
- * @pages: Array of buffer pages as returned by __iommu_dma_alloc_remap()
- * @size: Size of buffer in bytes
- * @handle: DMA address of buffer
- *
- * Frees both the pages associated with the buffer, and the array
- * describing them
- */
-static void __iommu_dma_free(struct device *dev, struct page **pages,
-		size_t size, dma_addr_t *handle)
-{
-	__iommu_dma_unmap(dev, *handle, size);
-	__iommu_dma_free_pages(pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
-	*handle = DMA_MAPPING_ERROR;
-}
-
 /**
  * iommu_dma_alloc_remap - Allocate and map a buffer contiguous in IOVA space
  * @dev: Device to allocate memory for. Must be a real device
@@ -1053,7 +1035,8 @@ static void iommu_dma_free(struct device *dev, size_t size, void *cpu_addr,
 
 		if (!pages)
 			return;
-		__iommu_dma_free(dev, pages, iosize, &handle);
+		__iommu_dma_unmap(dev, handle, iosize);
+		__iommu_dma_free_pages(pages, size >> PAGE_SHIFT);
 		dma_common_free_remap(cpu_addr, size, VM_USERMAP);
 	} else {
 		__iommu_dma_unmap(dev, handle, iosize);