qcacld-3.0: memset reject_ap_info properly before usage

Currently, reject_ap_info is used at many places and memset is
not done before filling it. memset the buffer to avoid reading
garbage values.
Also, modify the current initialization of ap_info in
cm_add_bssid_to_reject_list to memset.

Change-Id: Ic0fabc1733c4ea63dccb2e45b2a2dc37791e594d
CRs-Fixed: 3040299

components/umac/mlme/connection_mgr/core/src/wlan_cm_roam_fw_sync.c

@@ -141,6 +141,7 @@ cm_fw_roam_sync_start_ind(struct wlan_objmgr_vdev *vdev,
 	if (IS_ROAM_REASON_STA_KICKOUT(roam_reason)) {
 		struct reject_ap_info ap_info;
 
+		qdf_mem_zero(&ap_info, sizeof(struct reject_ap_info));
 		ap_info.bssid = connected_bssid;
 		ap_info.reject_ap_type = DRIVER_AVOID_TYPE;
 		ap_info.reject_reason = REASON_STA_KICKOUT;
@@ -1068,6 +1069,7 @@ static QDF_STATUS cm_handle_ho_fail(struct scheduler_msg *msg)
 	cm_sm_deliver_event(vdev, WLAN_CM_SM_EV_ROAM_HO_FAIL,
 			    sizeof(wlan_cm_id), &cm_id);
 
+	qdf_mem_zero(&ap_info, sizeof(struct reject_ap_info));
 	ap_info.bssid = ind->bssid;
 	ap_info.reject_ap_type = DRIVER_AVOID_TYPE;
 	ap_info.reject_reason = REASON_ROAM_HO_FAILURE;

components/umac/mlme/connection_mgr/dispatcher/src/wlan_cm_roam_api.c

@@ -2445,7 +2445,9 @@ static void
 cm_add_bssid_to_reject_list(struct wlan_objmgr_pdev *pdev,
 			    struct sir_rssi_disallow_lst *entry)
 {
-	struct reject_ap_info ap_info = {0};
+	struct reject_ap_info ap_info;
+
+	qdf_mem_zero(&ap_info, sizeof(struct reject_ap_info));
 
 	ap_info.bssid = entry->bssid;
 	ap_info.reject_ap_type = DRIVER_RSSI_REJECT_TYPE;