cpufreq: imx6q-cpufreq: Improve the logic of -EPROBE_DEFER handling

Improve the -EPROBE_DEFER handling logic to simplify the code.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/cpufreq/imx6q-cpufreq.c

@@ -400,9 +400,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
 		ret = imx6q_opp_check_speed_grading(cpu_dev);
 	}
 	if (ret) {
-		if (ret == -EPROBE_DEFER)
-			goto out_free_opp;
-
+		if (ret != -EPROBE_DEFER)
 			dev_err(cpu_dev, "failed to read ocotp: %d\n",
 				ret);
 		goto out_free_opp;