hwmon: remove () used with return

fix checkpatch ERROR:
return is not a function, parentheses are not required

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
diff --git a/drivers/hwmon/atxp1.c b/drivers/hwmon/atxp1.c
index 33cc143..805e3b1 100644
--- a/drivers/hwmon/atxp1.c
+++ b/drivers/hwmon/atxp1.c
@@ -106,7 +106,7 @@
 
 	mutex_unlock(&data->update_lock);
 
-	return(data);
+	return data;
 }
 
 /* sys file functions for cpu0_vid */