qcacmn: Fix get station stats cmd timeout

Request is cleared before response for race condition between request
thread wificond and response work thread.
1. wificond thread sent cp_stats_get request and waited for
response.
2. worker thread got response from F/W, completed the request.
3. Wificond got the response, finished the request.
4. wificond triggered another cp_stats_get request, created
new request, set pending request bit TYPE_STATION_STATS.
5. Kworker thread clear the pending request bit
TYPE_STATION_STATS.
6. Cleared request TYPE_STATION_STATS couldn't be completed any
more, wificond thread waited for 1.6s, timeout happened.

Fix: Clear pending request bit TYPE_STATION_STATS before
complete the request, make sure old pending request bit is
cleared before new request of same type is set.

Change-Id: I7b89571b1e95a6e17aec9d649bd3adfccf3eb02e
CRs-Fixed: 2619370

umac/cp_stats/dispatcher/src/wlan_cp_stats_mc_tgt_api.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -882,9 +882,9 @@ static void tgt_mc_cp_stats_extract_station_stats(
 	 * reset type_map bit for station stats .
 	 */
 	if (tgt_mc_cp_stats_is_last_event(ev, TYPE_STATION_STATS)) {
+		ucfg_mc_cp_stats_reset_pending_req(psoc, TYPE_STATION_STATS);
 		tgt_mc_cp_stats_prepare_n_send_raw_station_stats(psoc,
 								 &last_req);
-		ucfg_mc_cp_stats_reset_pending_req(psoc, TYPE_STATION_STATS);
 	}
 }