iscsi-target: Fix iscsit_allocate_se_cmd_for_tmr failure path bugs

This patch fixes two bugs in allocation failure handling in
iscsit_allocate_se_cmd_for_tmr():

This first reported by DanC is a free-after call to transport_free_se_cmd(), this
patch drops the transport_free_se_cmd() call all together, as iscsit_release_cmd()
will release existing allocations as expected.

The second is a bug where iscsi_cmd_t was being leaked on a cmd->tmr_req allocation
failure, so make this jump to iscsit_release_cmd() as well.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index a1acb0167902..a0d23bc0fc98 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -243,7 +243,7 @@ struct iscsi_cmd *iscsit_allocate_se_cmd_for_tmr(
         if (!cmd->tmr_req) {
                 pr_err("Unable to allocate memory for"
                         " Task Management command!\n");
-                return NULL;
+                goto out;
         }
         /*
          * TASK_REASSIGN for ERL=2 / connection stays inside of
@@ -298,8 +298,6 @@ struct iscsi_cmd *iscsit_allocate_se_cmd_for_tmr(
         return cmd;
 out:
         iscsit_release_cmd(cmd);
-        if (se_cmd)
-                transport_free_se_cmd(se_cmd);
         return NULL;
 }