scsi: lpfc: Fix leaked ndlp krefs when in point-to-point topology

scsi: lpfc: Fix leaked ndlp krefs when in point-to-point topology

In point-to-point topology, the driver sometimes defers the unsolicited
FLOGI LS_ACC until it sends its FLOGI to the remote port.  When this
happens, lpfc neglects to release the ndlp allocated for the unsolicited
FLOGI.  This patch adds code to release the ndlp for the deferred
unsolicited FLOGI LS_ACC.

An NLP_FLOGI_DFR_ACC flag is introduced to facilitate identifying an
ndlp with an expected deferred FLOGI LS_ACC completion.  When
lpfc_cmpl_els_rsp() detects the correct qualifiers, it releases the
initial reference on the ndlp object.  And when lpfc_cmpl_els_rsp()
exits, the remaining put for the deferred action is executed and the
ndlp is released.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://patch.msgid.link/20251106224639.139176-6-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>