Merge tag 'iommu-fixes-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull iommu fixes from Joerg Roedel:

 - Fix for a potential NULL-ptr dereference in IOMMU core code

 - Two resource leak fixes

 - Cache flush fix in the Intel VT-d driver

* tag 'iommu-fixes-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Fix incomplete cache flush in intel_pasid_tear_down_entry()
  iommu/vt-d: Fix PASID reference leak
  iommu: Check if group is NULL before remove device
  iommu/dma: Fix leak in non-contiguous API