mm: zswap: increase reject_compress_poor but not reject_compress_fail if compression returns ENOSPC

We used to rely on the returned -ENOSPC of zpool_malloc() to increase
reject_compress_poor.  But the code wouldn't get to there after commit
744e1885 ("crypto: scomp - fix req->dst buffer overflow") as the new
code will goto out immediately after the special compression case happens.
So there might be no longer a chance to execute zpool_malloc now.  We are
incorrectly increasing zswap_reject_compress_fail instead.  Thus, we need
to fix the counters handling right after compressions return ENOSPC.  This
patch also centralizes the counters handling for all of compress_poor,
compress_fail and alloc_fail.

Link: https://lkml.kernel.org/r/20240219211935.72394-1-21cnbao@gmail.com
Fixes: 744e1885

 ("crypto: scomp - fix req->dst buffer overflow")
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>