remove unnecessary void* type casting

Signed-off-by: Zhou jie <zhoujie@nfschina.com>
---
 drivers/md/dm-verity-fec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c
index cea2b3789736..3f19fd89cf98 100644
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -567,14 +567,14 @@ void verity_fec_dtr(struct dm_verity *v)
 
 static void *fec_rs_alloc(gfp_t gfp_mask, void *pool_data)
 {
-	struct dm_verity *v = (struct dm_verity *)pool_data;
+	struct dm_verity *v = pool_data;
 
 	return init_rs_gfp(8, 0x11d, 0, 1, v->fec->roots, gfp_mask);
 }
 
 static void fec_rs_free(void *element, void *pool_data)
 {
-	struct rs_control *rs = (struct rs_control *)element;
+	struct rs_control *rs = element;
 
 	if (rs)
 		free_rs(rs);
-- 
2.18.2