mt76: mt7921: fix retrying release semaphore without end

We should pass the error code to the caller immediately
to avoid the possible infinite retry to release the semaphore.

Fixes: 1c099ab4 ("mt76: mt7921: add MCU support")
Co-developed-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/mcu.c

@@ -736,7 +736,7 @@ static int mt7921_load_patch(struct mt7921_dev *dev)
 	default:
 		ret = -EAGAIN;
 		dev_err(dev->mt76.dev, "Failed to release patch semaphore\n");
-		goto out;
+		break;
 	}
 	release_firmware(fw);