HID: thrustmaster: fix return value check in thrustmaster_probe()

Fix the return value check which testing the wrong variable
in thrustmaster_probe().

Fixes: c49c33637802 ("HID: support for initialization of some Thrustmaster wheels")
Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Wei Yongjun <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

drivers/hid/hid-thrustmaster.c

···
 	}
 
 	tm_wheel->change_request = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
-	if (!tm_wheel->model_request) {
+	if (!tm_wheel->change_request) {
 		ret = -ENOMEM;
 		goto error5;
 	}