asus-wmi: fix error handling in store_sys_wmi()

The asus_wmi_get_devstate_simple() returns 0-1 on success. In theory
according to static checkers, it can return either -EIO or -ENODEV on
failure. Currently the error handling code only handles -ENODEV and
-EIO is treated as success. Let's make it handle the -EIO error as
well.

It's possible that it can't actually return -EIO and this patch is not
needed but in that case this patch is harmless and silences a static
checker warning so it's still worth it.

Signed-off-by: Dan Carpenter <[e-mail]>
Signed-off-by: Darren Hart <[e-mail]>

drivers/platform/x86/asus-wmi.c

···
 	int rv, err, value;
 
 	value = asus_wmi_get_devstate_simple(asus, devid);
-	if (value == -ENODEV)	/* Check device presence */
+	if (value < 0)
 		return value;
 
 	rv = parse_arg(buf, count, &value);