spi: fsl-(e)spi: Fix checking return value of devm_ioremap_resource

devm_ioremap_resource() returns ERR_PTR on error.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-fsl-espi.c

@@ -674,8 +674,8 @@ static struct spi_master * fsl_espi_probe(struct device *dev,
 	mpc8xxx_spi = spi_master_get_devdata(master);
 
 	mpc8xxx_spi->reg_base = devm_ioremap_resource(dev, mem);
-	if (!mpc8xxx_spi->reg_base) {
-		ret = -ENOMEM;
+	if (IS_ERR(mpc8xxx_spi->reg_base)) {
+		ret = PTR_ERR(mpc8xxx_spi->reg_base);
 		goto err_probe;
 	}
 

drivers/spi/spi-fsl-spi.c

@@ -633,8 +633,8 @@ static struct spi_master * fsl_spi_probe(struct device *dev,
 		goto err_cpm_init;
 
 	mpc8xxx_spi->reg_base = devm_ioremap_resource(dev, mem);
-	if (mpc8xxx_spi->reg_base == NULL) {
-		ret = -ENOMEM;
+	if (IS_ERR(mpc8xxx_spi->reg_base)) {
+		ret = PTR_ERR(mpc8xxx_spi->reg_base);
 		goto err_probe;
 	}