If a bdev-based controller is partially set up but then needs to be torn
down due to an invalid configuration, the nvmf_bdev_ctrlr_detach()
function could try to put a NULL spdk_io_channel.
Add checks to avoid releasing resources that weren't allocated yet.
Change-Id: I779c80f4dc654af3c4b0a49d8d216e13ab5f8333
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/373390
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
42ec0c007e