[PATCH] scsi:libiscsi:Fix an error count for active session

[wubo (T)]

From: Wu Bo <wubo40@xxxxxxxxxx>

Fix an error count for active session if the total_cmds is invalid 
on the function iscsi_session_setup().
decrement the number of active sessions before the func return.

Signed-off-by: Wu Bo <wubo40@xxxxxxxxxx>
---
 drivers/scsi/libiscsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 70b99c0..b7158eb 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2771,7 +2771,7 @@ struct iscsi_cls_session *
                       "must be a power of 2.\n", total_cmds);
                total_cmds = rounddown_pow_of_two(total_cmds);
                if (total_cmds < ISCSI_TOTAL_CMDS_MIN)
-                       return NULL;
+                       goto dec_session_count;
                printk(KERN_INFO "iscsi: Rounding can_queue to %d.\n",
                       total_cmds);
        }
--
1.8.3.1