kernel: mm/damon/reclaim: fix potential memory leak in damon_reclaim_init()

In the Linux kernel, the following vulnerability has been resolved: mm/damon/reclaim: fix potential memory leak in damonreclaiminit damonreclaiminit allocates a memory chunk for ctx with damonnewctx. When damonselectops fails, ctx is not released, which will lead to a memory leak. We should relea...