raid5: remove worker_cnt_per_group argument from alloc_thread_groups

We can use "cnt" directly to update conf->worker_cnt_per_group
if alloc_thread_groups returns 0.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
1 file changed