HID: fix error condition propagation in hid-sony driver

sony_set_operational() only propagates return value from
usb_control_msg(), which returns negative on error and number
of transferred bytes otherwise.
Reported-by: NMarcin Tolysz <tolysz@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/hid/hid-sony.c

@@ -102,7 +102,7 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	}
 
 	ret = sony_set_operational(hdev);
-	if (ret)
+	if (ret < 0)
 		goto err_stop;
 
 	return 0;