drm: xlnx: zynqmp_dpsub: Add missing check for dma_set_mask

Add check for dma_set_mask() and return the error if it fails.

Fixes: d76271d ("drm: xlnx: DRM/KMS driver for Xilinx ZynqMP DisplayPort Subsystem")
Signed-off-by: Jiasheng Jiang <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Reviewed-by: Tomi Valkeinen <[email protected]>
Signed-off-by: Laurent Pinchart <[email protected]>

Author: JiangJias

drivers/gpu/drm/xlnx/zynqmp_dpsub.c

@@ -227,7 +227,9 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev)
 	dpsub->dev = &pdev->dev;
 	platform_set_drvdata(pdev, dpsub);
 
-	dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));
+	ret = dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));
+	if (ret)
+		return ret;
 
 	/* Try the reserved memory. Proceed if there's none. */
 	of_reserved_mem_device_init(&pdev->dev);