GSD-2023-1001519 perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()

perf/smmuv3: Fix hotplug callback leak in armsmmupmuinit 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 v5.10.163 by commit...