hwmon: (w83627ehf) Fix a resource leak in probe

Smatch has a new check for resource leaks which found a bug in probe:

    drivers/hwmon/w83627ehf.c:2417 w83627ehf_probe()
    warn: 'res->start' not released on lines: 2412.

We need to clean up if devm_hwmon_device_register_with_info() fails.

Fixes: 266cd58359 ("hwmon: (w83627ehf) convert to with_info interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20200921125212.GA1128194@mwanda
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/w83627ehf.c

@@ -1951,8 +1951,12 @@ static int w83627ehf_probe(struct platform_device *pdev)
 							 data,
 							 &w83627ehf_chip_info,
 							 w83627ehf_groups);
+	if (IS_ERR(hwmon_dev)) {
+		err = PTR_ERR(hwmon_dev);
+		goto exit_release;
+	}
 
-	return PTR_ERR_OR_ZERO(hwmon_dev);
+	return 0;
 
 exit_release:
 	release_region(res->start, IOREGION_LENGTH);