dmaengine: at_hdma: use DMA_COMPLETE for dma completion status

Acked-by: NDan Williams <dan.j.williams@intel.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

drivers/dma/at_hdmac.c

@@ -1102,7 +1102,7 @@ atc_tx_status(struct dma_chan *chan,
 	int bytes = 0;
 
 	ret = dma_cookie_status(chan, cookie, txstate);
-	if (ret == DMA_SUCCESS)
+	if (ret == DMA_COMPLETE)
 		return ret;
 	/*
 	 * There's no point calculating the residue if there's