i2c: designware: Fix optional reset error handling

The commit bb475230 ("reset: make optional functions really optional")
brought a missed part of the support for an optional reset handlers.

Since that we don't need to have special error handling in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-designware-platdrv.c

@@ -279,12 +279,10 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, dev);
 
 	dev->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
-	if (IS_ERR(dev->rst)) {
-		if (PTR_ERR(dev->rst) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-	} else {
+	if (IS_ERR(dev->rst))
+		return PTR_ERR(dev->rst);
+
 	reset_control_deassert(dev->rst);
-	}
 
 	t = &dev->timings;
 	if (pdata)
@@ -402,7 +400,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
 exit_probe:
 	dw_i2c_plat_pm_cleanup(dev);
 exit_reset:
-	if (!IS_ERR_OR_NULL(dev->rst))
 	reset_control_assert(dev->rst);
 	return ret;
 }
@@ -421,7 +418,6 @@ static int dw_i2c_plat_remove(struct platform_device *pdev)
 	pm_runtime_put_sync(&pdev->dev);
 	dw_i2c_plat_pm_cleanup(dev);
 
-	if (!IS_ERR_OR_NULL(dev->rst))
 	reset_control_assert(dev->rst);
 
 	return 0;