dma-direct: use phys_to_dma_direct in dma_direct_alloc

Replace the currently open code copy.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
This commit is contained in:
Christoph Hellwig 2020-08-17 17:20:52 +02:00
commit 96eb89caf7