scripts/setup: Return all block devices attached to a given controller

Each nvme BDF can have multiple namespaces, hence multiple block
devices, return them all.

Change-Id: I93fe8acf5b1904f05514445eb3e970ef4254caed
Signed-off-by: Michal Berger <michalx.berger@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5170
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: John Kariuki <John.K.Kariuki@intel.com>

scripts/setup.sh

@@ -175,7 +175,6 @@ function get_block_dev_from_bdf() {
 	for block in /sys/block/*; do
 		if [[ $(readlink -f "$block/device") == *"/$bdf/"* ]]; then
 			echo "${block##*/}"
-			return 0
 		fi
 	done
 }