kernel: bpf: cpumap: Fix memory leak in cpu_map_update_elem

In the Linux kernel, the following vulnerability has been resolved: bpf: cpumap: Fix memory leak in cpumapupdateelem Syzkaller reported a memory leak as follows: BUG: memory leak unreferenced object 0xff110001198ef748 size 192: comm "syz-executor.3", pid 17672, jiffies 4298118891 age 9.906s hex...