[PATCH] dmaengine: mxs-dma: Add check for dma_set_max_seg_size()

[Ma Ke]

To avoid the failure of dma_set_max_seg_size(), we should check the
return value of the dma_set_max_seg_size().

Signed-off-by: Ma Ke <make_ruc2021 at 163.com>
---
 drivers/dma/mxs-dma.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index cfb9962417ef..90cbb9b04b02 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -798,7 +798,9 @@ static int mxs_dma_probe(struct platform_device *pdev)
 	mxs_dma->dma_device.dev = &pdev->dev;
 
 	/* mxs_dma gets 65535 bytes maximum sg size */
-	dma_set_max_seg_size(mxs_dma->dma_device.dev, MAX_XFER_BYTES);
+	ret = dma_set_max_seg_size(mxs_dma->dma_device.dev, MAX_XFER_BYTES);
+	if (ret)
+		return ret;
 
 	mxs_dma->dma_device.device_alloc_chan_resources = mxs_dma_alloc_chan_resources;
 	mxs_dma->dma_device.device_free_chan_resources = mxs_dma_free_chan_resources;
-- 
2.37.2