scsi: mpt3sas: Fix a fw_event memory leak

JIRA: https://issues.redhat.com/browse/RHEL-61878

In _mpt3sas_fw_work() the fw_event reference is removed, it should also
be freed in all cases.

Fixes: 4318c73 ("scsi: mpt3sas: Handle NVMe PCIe device related events generated from firmware.")
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20250723153018.50518-1-thenzl@redhat.com
Acked-by: Sathya Prakash Veerichetty <sathya.prakash@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 3e90b38)
Signed-off-by: Tomas Henzl <thenzl@redhat.com>

Author: thenzl

drivers/scsi/mpt3sas/mpt3sas_scsih.c

@@ -10790,8 +10790,7 @@ _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
 		break;
 	case MPI2_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
 		_scsih_pcie_topology_change_event(ioc, fw_event);
-		ioc->current_event = NULL;
-		return;
+		break;
 	}
 out:
 	fw_event_work_put(fw_event);