i40e: Fix possible memory leak in i40e_dbg_dump_desc

I didn't notice that return in the code, fix it by
adding a goto out instead to free the memory.

Fixes:

> New smatch warnings:
> drivers/net/ethernet/intel/i40e/i40e_debugfs.c:832 i40e_dbg_dump_desc() warn: possible memory leak of 'ring'

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
index 433a55886ad29bfb1b357d47ad4953f9ddac6145..cb0de455683e452810c0a404d9b1bd138418fb88 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
@@ -829,7 +829,7 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
                if (desc_n >= ring->count || desc_n < 0) {
                        dev_info(&pf->pdev->dev,
                                 "descriptor %d not found\n", desc_n);
-                       return;
+                       goto out;
                }
                if (!is_rx_ring) {
                        txd = I40E_TX_DESC(ring, desc_n);
@@ -855,6 +855,8 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
        } else {
                dev_info(&pf->pdev->dev, "dump desc rx/tx <vsi_seid> <ring_id> [<desc_n>]\n");
        }
+
+out:
        kfree(ring);
 }