iommu/vt-d: Fix PCI device refcount leak in hasexternalpci()
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 v5.15.82 by commit b6eea8b2e858a20ad58ac62dc2de90fea2413f94, it was introduced in version v5.0 by commit 89a6079df791aeace2044ea93be1b397195824ec. For more details please see the references link.