wlan: Disable isPnoEnable flag if sched_scan_stop fails due to SSR

If sched scan stop fails due to SSR, further attempts to enable
PNO will fail as isPnoEnable flag is not cleared as a part of sched
scan stop. Also Since SSR is triggered firmware will not remember the
earlier PNO configuration, which will end up with no scans in suspend
mode.

Change-Id: I0e172d16a7f9d67dd39bf92abc96eca90bb07b61
CRs-Fixed: 920874
diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index 412c940..ce12ac1 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -16736,6 +16736,7 @@
     {
         VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
                   "%s: LOGP in Progress. Ignore!!!", __func__);
+        pHddCtx->isPnoEnable = FALSE;
         return ret;
     }