scsi: iscsi: Release endpoint ID when its freed
We can't release the endpoint ID until all references to the endpoint have been dropped or it could be allocated while in use. This has us use an idr instead of looping over all conns to find a free ID and then free the ID when all references have been dropped instead of when the device is only deleted. Link: https://lore.kernel.org/r/20220408001314.5014-4-michael.christie@oracle.comTested-by: NManish Rangankar <mrangankar@marvell.com> Reviewed-by: NLee Duncan <lduncan@suse.com> Reviewed-by: NChris Leech <cleech@redhat.com> Reviewed-by: NWu Bo <wubo40@huawei.com> Signed-off-by: NMike Christie <michael.christie@oracle.com> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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