[PATCH iwl-net v1 1/2] iavf: fix ASQ command buffer leak on init failure

[xuanqiang.luo@linux.dev]

From: Xuanqiang Luo <luoxuanqiang@kylinos.cn>

iavf_alloc_adminq_asq_ring() allocates cmd_buf before the remaining ASQ
resources. If iavf_alloc_asq_bufs() or iavf_config_asq_regs() fails, the
unwind path elides cmd_buf while freeing the other allocations.

The ASQ count is not set until initialization succeeds, so the shutdown
path cannot reclaim the buffer. Free cmd_buf in the common unwind path.

Fixes: d358aa9a7a2d ("i40evf: init code and hardware support")
Cc: stable@vger.kernel.org
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
---
 drivers/net/ethernet/intel/iavf/iavf_adminq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
index 6937b7dd44cbb..82a32f8e78c12 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
@@ -346,6 +346,7 @@ static enum iavf_status iavf_init_asq(struct iavf_hw *hw)
 	iavf_free_virt_mem(hw, &hw->aq.asq.dma_head);
 
 init_adminq_free_rings:
+	iavf_free_virt_mem(hw, &hw->aq.asq.cmd_buf);
 	iavf_free_adminq_asq(hw);
 
 init_adminq_exit:
-- 
2.43.0