hwmon: (ibmaem) Fix return value

Propagate appropriate error code obtained from ipmi_create_user()
instead of hardcoding.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

drivers/hwmon/ibmaem.c

@@ -292,7 +292,7 @@ static int aem_init_ipmi_data(struct aem_ipmi_data *data, int iface,
 		dev_err(bmc,
 			"Unable to register user with IPMI interface %d\n",
 			data->interface);
-		return -EACCES;
+		return err;
 	}
 
 	return 0;