qcacld-3.0: Fix g23_prevent issues for hdd

Currently in hdd_get_curr_thermal_stats_val,
hdd_get_station_info_ex skb is not getting
freed, this might cause memory leakage.

To address this issue free skb each time for
nla failure

Change-Id: If481cf0ea6cbdce55b3f02c3ce99f577deaac9c7
CRs-Fixed: 3297781

core/hdd/src/wlan_hdd_station_info.c

@@ -2389,6 +2389,7 @@ static int hdd_get_station_info_ex(struct hdd_context *hdd_ctx,
 	if (connect_fail_rsn_len) {
 		if (hdd_add_connect_fail_reason_code(skb, adapter)) {
 			hdd_err_rl("hdd_add_connect_fail_reason_code fail");
+			kfree_skb(skb);
 			return -ENOMEM;
 		}
 	}

core/hdd/src/wlan_hdd_thermal.c

@@ -400,7 +400,7 @@ hdd_get_curr_thermal_stats_val(struct wiphy *wiphy,
 	if (!therm_attr) {
 		hdd_err_rl("nla_nest_start failed for attr failed");
 		ret = -EINVAL;
-		goto completed;
+		goto nla_failed;
 	}
 
 	for (i = 0; i < get_tt_stats->therm_throt_levels; i++) {
@@ -409,7 +409,7 @@ hdd_get_curr_thermal_stats_val(struct wiphy *wiphy,
 			hdd_err_rl("nla_nest_start failed for thermal level %d",
 				   i);
 			ret = -EINVAL;
-			goto completed;
+			goto nla_failed;
 		}
 
 		hdd_debug("level %d, Temp Range: %d - %d, Dwell time %d, Counter %d",
@@ -436,7 +436,10 @@ hdd_get_curr_thermal_stats_val(struct wiphy *wiphy,
 	}
 	nla_nest_end(skb, therm_attr);
 	wlan_cfg80211_vendor_cmd_reply(skb);
+	goto completed;
 
+nla_failed:
+	kfree_skb(skb);
 completed:
 	hdd_ctx->is_therm_stats_in_progress = false;
 	osif_request_put(request);