Merge tag 'iommu-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull IOMMU fix from Will Deacon:

 - Fix regression introduced by the empty MMU gather fix in -rc7, where
   the ->iotlb_sync() callback can be elided incorrectly, resulting in
   boot failures (hangs), crashes and potential memory corruption.

* tag 'iommu-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
  iommu: Ensure .iotlb_sync is called correctly