iommu/arm-smmu-v3: fix event handling soft lockup
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 v4.9.311 by commit ffa0495a506d5edbd1b4ad45a2759bc080856695. For more details please see the references link.