hwmon: (tmp401) Fix incorrect return value of tmp401_init_client

When ti,n-factor, ti,beta-compentation are not defined in devicetree,
of_property_read_u32|s32 returns -EINVAL. In this case,
tmp401_init_client should return 0 instead of simply pass ret to its
caller.

Signed-off-by: Camel Guo <camel.guo@axis.com>
Link: https://lore.kernel.org/r/20220425100019.562781-1-camel.guo@axis.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/tmp401.c

@@ -604,7 +604,7 @@ static int tmp401_init_client(struct tmp401_data *data)
 			return ret;
 	}
 
-	return ret;
+	return 0;
 }
 
 static int tmp401_detect(struct i2c_client *client,