Check if a LUN already exists before allocating the spdk_scsi_lun
structure - this matches the real implementation of
spdk_scsi_lun_construct().
Fixes: e44731d659 ("scsi: Remove the claimed flag from LUN")
Change-Id: I529648f93cd21e9f19ce82ef571cabe9c7e8c49a
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/390903
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>