Remove unused variable "err" from mts_scsi_queuecommand_lck().
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/20191005054931.GA11565@sauravSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>