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 v4.19.264 by commit 5cecfe151874b835331efe086bbdcaeaf64f6b90, it was introduced in version v4.2 by commit 86080ccc223aabf8d0b85a504f4f06aa88e82fb3. For more details please see the references link.