From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 28 Sep 2020 12:13:00 +0300
Subject: scsi: be2iscsi: Fix a theoretical leak in beiscsi_create_eqs()
Git-commit: 38b2db564d9ab7797192ef15d7aade30633ceeae
Patch-mainline: v5.10-rc1
References: bsc#1186953

The be_fill_queue() function can only fail when "eq_vaddress" is NULL and
since it's non-NULL here that means the function call can't fail.  But
imagine if it could, then in that situation we would want to store the
"paddr" so that dma memory can be released.

Link: https://lore.kernel.org/r/20200928091300.GD377727@mwanda
Fixes: bfead3b2cb46 ("[SCSI] be2iscsi: Adding msix and mcc_rings V3")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
 drivers/scsi/be2iscsi/be_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 8dc2e0824ad7..0e45f2c14559 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -3020,6 +3020,7 @@ static int beiscsi_create_eqs(struct beiscsi_hba *phba,
 			goto create_eq_error;
 		}
 
+		mem->dma = paddr;
 		mem->va = eq_vaddress;
 		ret = be_fill_queue(eq, phba->params.num_eq_entries,
 				    sizeof(struct be_eq_entry), eq_vaddress);
@@ -3029,7 +3030,6 @@ static int beiscsi_create_eqs(struct beiscsi_hba *phba,
 			goto create_eq_error;
 		}
 
-		mem->dma = paddr;
 		ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
 					    BEISCSI_EQ_DELAY_DEF);
 		if (ret) {
@@ -3086,6 +3086,7 @@ static int beiscsi_create_cqs(struct beiscsi_hba *phba,
 			goto create_cq_error;
 		}
 
+		mem->dma = paddr;
 		ret = be_fill_queue(cq, phba->params.num_cq_entries,
 				    sizeof(struct sol_cqe), cq_vaddress);
 		if (ret) {
@@ -3095,7 +3096,6 @@ static int beiscsi_create_cqs(struct beiscsi_hba *phba,
 			goto create_cq_error;
 		}
 
-		mem->dma = paddr;
 		ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
 					    false, 0);
 		if (ret) {