iommu/amd: Pass last in through to build_inv_address()

iommu/amd: Pass last in through to build_inv_address()

This is the trivial call chain below amd_iommu_domain_flush_pages().

Cases that are doing a full invalidate will pass a last of U64_MAX.

This avoids converting between size and last, and type confusion with
size_t, unsigned long and u64 all being used in different places along
the driver's invalidation path. Consistently use u64 in the internals.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>