[PATCH] macintosh: don't store i2c_add_driver() return if no further processing done

therm_pm72.c and windfarm_lm75_sensor.c both store the return from
i2c_add_driver() but do no further processing on the result.  Simply return
what i2c_add_driver() did, instead.
Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/macintosh/therm_pm72.c

@@ -1988,18 +1988,13 @@ static void fcu_lookup_fans(struct device_node *fcu_node)
 
 static int fcu_of_probe(struct of_device* dev, const struct of_device_id *match)
 {
-	int rc;
-
 	state = state_detached;
 
 	/* Lookup the fans in the device tree */
 	fcu_lookup_fans(dev->node);
 
 	/* Add the driver */
-	rc = i2c_add_driver(&therm_pm72_driver);
-	if (rc < 0)
-		return rc;
-	return 0;
+	return i2c_add_driver(&therm_pm72_driver);
 }
 
 static int fcu_of_remove(struct of_device* dev)

drivers/macintosh/windfarm_lm75_sensor.c

@@ -240,12 +240,7 @@ static int wf_lm75_detach(struct i2c_client *client)
 
 static int __init wf_lm75_sensor_init(void)
 {
-	int rc;
-
-	rc = i2c_add_driver(&wf_lm75_driver);
-	if (rc < 0)
-		return rc;
-	return 0;
+	return i2c_add_driver(&wf_lm75_driver);
 }
 
 static void __exit wf_lm75_sensor_exit(void)