RDMA/rtrs-clt: Kill wait_for_inflight_permits

Let's wait the inflight permits before free it.

Link: https://lore.kernel.org/r/20201217141915.56989-10-jinpu.wang@cloud.ionos.comSigned-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Reviewed-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/ulp/rtrs/rtrs-clt.c

@@ -1318,6 +1318,12 @@ static int alloc_permits(struct rtrs_clt *clt)
 
 static void free_permits(struct rtrs_clt *clt)
 {
+	if (clt->permits_map) {
+		size_t sz = clt->queue_depth;
+
+		wait_event(clt->permits_wait,
+			   find_first_bit(clt->permits_map, sz) >= sz);
+	}
 	kfree(clt->permits_map);
 	clt->permits_map = NULL;
 	kfree(clt->permits);
@@ -2607,19 +2613,8 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num,
 	return clt;
 }
 
-static void wait_for_inflight_permits(struct rtrs_clt *clt)
-{
-	if (clt->permits_map) {
-		size_t sz = clt->queue_depth;
-
-		wait_event(clt->permits_wait,
-			   find_first_bit(clt->permits_map, sz) >= sz);
-	}
-}
-
 static void free_clt(struct rtrs_clt *clt)
 {
-	wait_for_inflight_permits(clt);
 	free_permits(clt);
 	free_percpu(clt->pcpu_path);
 	mutex_destroy(&clt->paths_ev_mutex);