current_queue_depth should have been incremented only if I/O submission succeeded. Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Change-Id: Ibdcae2d4e8d5b804faaac2392226252c95dfb634 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2586 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: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>