iommu/tegra-gart: Make use of domain_alloc and domain_free
iommu/tegra-gart: Make use of domain_alloc and domain_free

Implement domain_alloc and domain_free iommu-ops as a
replacement for domain_init/domain_destroy.

Tested-by: Thierry Reding <3055038c414aef68bf32c33b8118623e7554e0f2@nvidia.com>
Acked-by: Thierry Reding <3055038c414aef68bf32c33b8118623e7554e0f2@nvidia.com>
Signed-off-by: Joerg Roedel <61aff96566804ea1da8a65de5bcc892ce07caceb@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs