[media] dw2102: fix unreleased firmware

On the particular case when the product id is 0x2101 we have requested
for a firmware but after processing it we missed releasing it.
Signed-off-by: NSudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/dvb-usb/dw2102.c

@@ -1843,6 +1843,9 @@ static int dw2102_load_firmware(struct usb_device *dev,
 		msleep(100);
 		kfree(p);
 	}
+
+	if (le16_to_cpu(dev->descriptor.idProduct) == 0x2101)
+		release_firmware(fw);
 	return ret;
 }