scsi: lpfc: Remove ndlp when a PLOGI/ADISC/PRLI/REG_RPI ultimately fails

When a PLOGI/ADISC/PRLI/REG_RPI fails, the node remains in the nodelist in
that state.  Although the driver now frees a node when the ref count goes
to zero, in this case the ref cnt doesn't reach zero because there isn't a
mechanism to release the final reference.  Discovery just stops.

Fix by calling the node discovery state machine DEVICE_RM event whenever
one of these commands fail. This will remove the final reference count and
trigger node release.

Link: https://lore.kernel.org/r/20201115192646.12977-7-james.smart@broadcom.com
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>