iommu/vt-d: Fix error handling in sva enable/disable paths

Roll back all previous actions in error paths of intel_iommu_enable_sva()
and intel_iommu_disable_sva().

Fixes: d5b9e4bf

 ("iommu/vt-d: Report prq to io-pgfault framework")
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20230208051559.700109-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>