qcacmn: Protect the TxQueue in failure

qcacld-2.0 to qcacmn propagation

To acquire lock to protect pEndpoint->TxQueue
in the failure path.

Change-Id: I6844f1329427e7065dc3e4e64bf105087d963dd9
CRs-Fixed: 1077223

htc/htc_send.c

@@ -1228,13 +1228,11 @@ static HTC_SEND_QUEUE_RESULT htc_try_send(HTC_TARGET *target,
 
 			for (i = HTC_PACKET_QUEUE_DEPTH(&sendQueue); i > 0; i--)
 				hif_pm_runtime_put(target->hif_dev);
-
-			HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxQueue,
-							  &sendQueue);
-
 			if (!pEndpoint->async_update) {
 				LOCK_HTC_TX(target);
 			}
+			HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxQueue,
+							  &sendQueue);
 			break;
 		}