Description: iommu/vt-d: Fix sysfs leak in alloc_iommu()
References:
Notes:
 carnil> Introduced in 39ab9555c2411 ("iommu: Add sysfs bindings for struct
 carnil> iommu_device"). Vulnerable versions: 4.11-rc1.
Bugs:
upstream: released (5.13-rc4) [0ee74d5a48635c848c20f152d0d488bf84641304]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: released (5.10.42) [f01134321d04f47c718bb41b799bcdeda27873d2]
4.19-upstream-stable: released (4.19.193) [2ec5e9bb6b0560c90d315559c28a99723c80b996]
sid: released (5.14.6-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: released (5.10.46-1)
4.19-buster-security: released (4.19.194-1)