scsi: lpfc: Fix dynamic fw log enablement check

The recently posted patch had a typo that incorrectly tested the receiving
function.

Fix the typo (change == to !=)

Fixes: 95bfc6d ("scsi: lpfc: Make FW logging dynamically configurable")
Link: https://lore.kernel.org/r/20191105005708.7399-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_attr.c

@@ -5981,7 +5981,7 @@ lpfc_ras_fwlog_buffsize_set(struct lpfc_hba  *phba, uint val)
 	if (phba->cfg_ras_fwlog_buffsize == val)
 		return 0;
 
-	if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn))
+	if (phba->cfg_ras_fwlog_func != PCI_FUNC(phba->pcidev->devfn))
 		return -EINVAL;
 
 	spin_lock_irq(&phba->hbalock);