perf/armdmc620: Fix hotplug callback leak in dmc620pmu_init()
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 v5.15.86 by commit b99fbe8d949a99fe456f08c7aad421327685aa50, it was introduced in version v5.11 by commit 53c218da220c3619b5befec4674ffa35d590092a. For more details please see the references link.