thermal: imx: Use dev_err_probe() to simplify error handling

dev_err_probe() can reduce code size, uniform error handling and record the
defer probe reason etc., use it to simplify the code.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1597129185-8460-1-git-send-email-Anson.Huang@nxp.com

drivers/thermal/imx_thermal.c

@@ -716,14 +716,9 @@ static int imx_thermal_probe(struct platform_device *pdev)
 
 	if (of_find_property(pdev->dev.of_node, "nvmem-cells", NULL)) {
 		ret = imx_init_from_nvmem_cells(pdev);
-		if (ret) {
-			if (ret == -EPROBE_DEFER)
-				return ret;
-
-			dev_err(&pdev->dev, "failed to init from nvmem: %d\n",
-				ret);
-			return ret;
-		}
+		if (ret)
+			return dev_err_probe(&pdev->dev, ret,
+					     "failed to init from nvmem\n");
 	} else {
 		ret = imx_init_from_tempmon_data(pdev);
 		if (ret) {
@@ -746,14 +741,9 @@ static int imx_thermal_probe(struct platform_device *pdev)
 		     data->socdata->power_down_mask);
 
 	ret = imx_thermal_register_legacy_cooling(data);
-	if (ret) {
-		if (ret == -EPROBE_DEFER)
-			return ret;
-
-		dev_err(&pdev->dev,
-			"failed to register cpufreq cooling device: %d\n", ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "failed to register cpufreq cooling device\n");
 
 	data->thermal_clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(data->thermal_clk)) {