iommu/vt-d: Fix misuse of ALIGN in qi_flush_piotlb()

Use IS_ALIGNED() instead. Otherwise, an unaligned address will be ignored.

Fixes: 33cd6e64 ("iommu/vt-d: Flush PASID-based iotlb for iova over first level")
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20201231005323.2178523-1-baolu.lu@linux.intel.com


Signed-off-by: Will Deacon <will@kernel.org>