mtd: rawnand: qcom: Use dma_mapping_error() for error check

dma_mapping_error() should be used for checking the error value of
dma_map_resource() API.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210405050912.115591-1-manivannan.sadhasivam@linaro.org

Author: Mani-Sadhasivam

drivers/mtd/nand/raw/qcom_nandc.c

@@ -3051,7 +3051,7 @@ static int qcom_nandc_probe(struct platform_device *pdev)
 	nandc->base_dma = dma_map_resource(dev, res->start,
 					   resource_size(res),
 					   DMA_BIDIRECTIONAL, 0);
-	if (!nandc->base_dma)
+	if (dma_mapping_error(dev, nandc->base_dma))
 		return -ENXIO;
 
 	ret = qcom_nandc_alloc(nandc);