media: platform: via: Handle error for dma_set_mask

As the potential failure of the dma_set_mask(), we fix this
bug by checking its return value and performing proper error
handling.
Signed-off-by: harperchen <harperchen1110@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/via/via-camera.c

@@ -1208,7 +1208,9 @@ static int viacam_probe(struct platform_device *pdev)
 	 * Convince the system that we can do DMA.
 	 */
 	pdev->dev.dma_mask = &viadev->pdev->dma_mask;
-	dma_set_mask(&pdev->dev, 0xffffffff);
+	ret = dma_set_mask(&pdev->dev, 0xffffffff);
+	if (ret)
+		goto out_ctrl_hdl_free;
 	/*
 	 * Fire up the capture port.  The write to 0x78 looks purely
 	 * OLPCish; any system will need to tweak 0x1e.