iommu/vt-d: Fix double list_add when enabling VMD in scalable mode
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 v5.15.27 by commit 2aaa085bd012a83be7104356301828585a2253ed, it was introduced in version v5.14 by commit 474dd1c6506411752a9b2f2233eec11f1733a099. For more details please see the references link.