iommu/amd: Remove unused variable in amd_iommufd_viommu_destroy()

This fixes warning reported by 0-DAY CI Kernel Test Service.

Fixes: 757d2b1fdf5b ("iommu/amd: Introduce gDomID-to-hDomID Mapping and handle parent domain invalidation")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601190634.bl7Mjx5Q-lkp@intel.com/
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
1 file changed