lis3lv02d_spi: module unload didn't remove sysfs entry

In module unload, lis3lv02d core driver sysfs clean up was not called.

Signed-off-by: Samu Onkalo <[e-mail]>
Acked-by: Daniel Mack <[e-mail]>
Cc: Éric Piel <[e-mail]>
Cc: "Trisal, Kalhan" <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/hwmon/lis3lv02d_spi.c

···
 	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
 	lis3lv02d_joystick_disable();
 	lis3lv02d_poweroff(lis3);
-	return 0;
+
+	return lis3lv02d_remove_fs(&lis3_dev);
 }
 
 #ifdef CONFIG_PM