[SCSI] lpfc 8.1.4 : Two misc fixes

Two misc fixes:
 - Fix deadlock caused by return with host_lock held in lpfc_findnode_did
 - Initialize all fields of the allocated mail box structure to zero.
   Was causing some sysfs mailbox commands to fail immediately after load.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 2558156..b62a72d 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -856,7 +856,7 @@
 		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 		if (!mbox)
 			return -ENOMEM;
-
+		memset(mbox, 0, sizeof (LPFC_MBOXQ_t));
 	}
 
 	spin_lock_irq(host->host_lock);