USB: option: make interface blacklist work again

commit 0d905fd5 "USB: option: convert Huawei K3765, K4505, K4605
reservered interface to blacklist" accidentally ANDed two
blacklist tests by leaving out a return.  This was not noticed
because the two consecutive bracketless if statements made it
syntactically correct.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: <stable@vger.kernel.org> # 3.2.y, 3.3.y
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/option.c

@@ -1346,6 +1346,7 @@ static int option_probe(struct usb_serial *serial,
 		serial->interface->cur_altsetting->desc.bInterfaceNumber,
 		OPTION_BLACKLIST_RESERVED_IF,
 		(const struct option_blacklist_info *) id->driver_info))
+		return -ENODEV;
 
 	/* Don't bind network interface on Samsung GT-B3730, it is handled by a separate module */
 	if (serial->dev->descriptor.idVendor == SAMSUNG_VENDOR_ID &&