iommu/vt-d: Clean up sidomain in the initdmars() error path
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.298 by commit 749bea542b67513e99240dc58bbfc099e842d508, it was introduced in version v4.2 by commit 86080ccc223aabf8d0b85a504f4f06aa88e82fb3. For more details please see the references link.