mm/damon: remove unnecessary type castings

Remove unnecessary void* type castings.

Link: https://lkml.kernel.org/r/20220421153056.8474-1-yuzhe@nfschina.comSigned-off-by: Yu Zhe <yuzhe@nfschina.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: liqiong <liqiong@nfschina.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/damon/core.c

@@ -1042,7 +1042,7 @@ static int kdamond_wait_activation(struct damon_ctx *ctx)
  */
 static int kdamond_fn(void *data)
 {
-	struct damon_ctx *ctx = (struct damon_ctx *)data;
+	struct damon_ctx *ctx = data;
 	struct damon_target *t;
 	struct damon_region *r, *next;
 	unsigned int max_nr_accesses = 0;