wlan: Memory leak in cfg80211

In sta+p2p cases, wpa_supplicant tries to setup connection without
knowing wlan driver is unloading by calling cfg80211 to update
bss info, causing memory leak

Change-Id: Ib5b3aa77dfa91657861f4818960b686df05f02ad
CRs-fixed: 545745
diff --git a/CORE/HDD/src/wlan_hdd_softap_tx_rx.c b/CORE/HDD/src/wlan_hdd_softap_tx_rx.c
index e8c7c7d..9c35a68 100644
--- a/CORE/HDD/src/wlan_hdd_softap_tx_rx.c
+++ b/CORE/HDD/src/wlan_hdd_softap_tx_rx.c
@@ -1693,8 +1693,18 @@
 
 VOS_STATUS hdd_softap_stop_bss( hdd_adapter_t *pAdapter)
 {
+    hdd_context_t *pHddCtx;
     VOS_STATUS vosStatus = VOS_STATUS_E_FAILURE;
     v_U8_t staId = 0;
+    pHddCtx = WLAN_HDD_GET_CTX(pAdapter);
+
+    /*bss deregister is not allowed during wlan driver loading or unloading*/
+    if (pHddCtx->isLoadUnloadInProgress)
+    {
+        VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+                   "%s:Loading_unloading in Progress. Ignore!!!",__func__);
+        return VOS_STATUS_E_PERM;
+    }
 
     vosStatus = hdd_softap_Deregister_BC_STA( pAdapter);