Merge tag 'dma-mapping-4.18-3' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:
 "Revert an incorrect dma-mapping commit for 4.18-rc"

* tag 'dma-mapping-4.18-3' of git://git.infradead.org/users/hch/dma-mapping:
  Revert "iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent()"