test/nvmf: fix the error message in nvmf_lvol test

modprobe -v nvme-rdma

lvol_stores=()

lvol_bdevs=()

lvol_stores=

lvol_bdevs=

# Create the first LVS from a Raid-0 bdev, which is created from two malloc bdevs

# Create remaining LVSs from a malloc bdev, respectively

for i in `seq 1 $SUBSYS_NR`; do

		bdev="$($rpc_py construct_malloc_bdev $MALLOC_BDEV_SIZE $MALLOC_BLOCK_SIZE)"

	fi

	ls_guid="$($rpc_py construct_lvol_store $bdev lvs_$i -c 524288)"

	lvol_stores+=("$ls_guid")

	lvol_stores+="lvs_$i "

	# 1 NVMe-OF subsystem per malloc bdev / lvol store / 10 lvol bdevs

	ns_bdevs=""

	# Create lvol bdevs on each lvol store

	for j in `seq 1 $LVOL_BDEVS_NR`; do

		lb_name="$($rpc_py construct_lvol_bdev -u $ls_guid lbd_$j $LVOL_BDEV_SIZE)"

		lvol_bdevs+=("$lb_name")

		lvol_bdevs+="$lb_name "

		ns_bdevs+="$lb_name "

	done

    $rpc_py delete_nvmf_subsystem nqn.2016-06.io.spdk:cnode$i

done

for lb_name in $lvol_bdevs; do

	 $rpc_py destroy_lvol_bdev "$lb_name"

done

for lvs in $lvol_stores; do

         $rpc_py destroy_lvol_store -l $lvs

done

rm -f ./local-job*

trap - SIGINT SIGTERM EXIT