we have already allocated memory for nbd_dev, but we were not
releasing that memory and just returning the error value.
Signed-off-by: NSudip Mukherjee <sudip@vectorindia.org>
Acked-by: NPaul Clements <Paul.Clements@SteelEye.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>