diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index ac852b5..d6aba8c 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -632,6 +632,7 @@
 		dev_err(priv->port.dev, "%s:dma_request_channel FAILS(Rx)\n",
 			__func__);
 		dma_release_channel(priv->chan_tx);
+		priv->chan_tx = NULL;
 		return;
 	}
 
@@ -1219,8 +1220,7 @@
 		dev_err(priv->port.dev,
 			"pch_uart_hal_set_fifo Failed(ret=%d)\n", ret);
 
-	if (priv->use_dma_flag)
-		pch_free_dma(port);
+	pch_free_dma(port);
 
 	free_irq(priv->port.irq, priv);
 }