iocost: Fix divide-by-zero on donation from low hweight cgroup
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 v5.15.11 by commit 3a1a4eb574178c21241a6200f4785572e661c472, it was introduced in version v5.10 by commit f1de2439ec43b74764f2a26e3a310b24407e3bde. For more details please see the references link.