wlan: Fix invalid reset of DEVICE_IFACE_OPENED in STA + Mon SCC

In STA + Monior SCC, when STA interface is disabled, DEVICE_IFACE_OPENED
flag of monitor adapter is also reset which is invalid and resulting in
failure of sniffer capture for sub-sequent STA enable.

To fix, stop capture on monitor interface when STA is disabled but
don't reset DEVICE_IFACE_OPENED for monitor adapter.

Change-Id: I9dcba91696a73bef808dc7cb6a1eb345ea3133af
CRs-Fixed: 2168505
diff --git a/CORE/HDD/src/wlan_hdd_main.c b/CORE/HDD/src/wlan_hdd_main.c
index de3ccde..6c4a1b7 100644
--- a/CORE/HDD/src/wlan_hdd_main.c
+++ b/CORE/HDD/src/wlan_hdd_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2018 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -7443,23 +7443,11 @@
    }
 
    if (pHddCtx->concurrency_mode == VOS_STA_MON) {
-       hdd_adapter_t *mon_adapter = hdd_get_adapter(pHddCtx, WLAN_HDD_MONITOR);
-       if (!mon_adapter) {
-           hddLog(LOGE,
-            FL("No valid monitor interface in STA + MON concurrency"));
-           return -EINVAL;
-       }
-
        /*
-        * In STA + Monitor mode concurrency, no point in enabling
-        * monitor interface, when STA interface is stopped
+        * In STA + Monitor mode concurrency, no point in running
+        * capture on monitor interface, when STA interface is stopped
         */
-       ret = hdd_mon_stop(mon_adapter->dev);
-       if (ret) {
-           hddLog(LOGE,
-            FL("Failed to stop Monitor interface in STA + MON concurrency"));
-           return ret;
-       }
+       wlan_hdd_stop_mon(pHddCtx, true);
    }
 
    /* Make sure the interface is marked as closed */