[PATCH][net-next] net/mlx5: Move command entry freeing outside of spinlock

[lirongqing <lirongqing@baidu.com>]

From: Li RongQing <lirongqing@baidu.com>

Move the kfree() call outside the critical section to reduce lock
holding time. This aligns with the general principle of minimizing
work under locks.

Signed-off-by: Li RongQing <lirongqing@baidu.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index 6c99c7f..c89417c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -196,17 +196,18 @@ static void cmd_ent_put(struct mlx5_cmd_work_ent *ent)
 	unsigned long flags;
 
 	spin_lock_irqsave(&cmd->alloc_lock, flags);
-	if (!refcount_dec_and_test(&ent->refcnt))
-		goto out;
+	if (!refcount_dec_and_test(&ent->refcnt)) {
+		spin_unlock_irqrestore(&cmd->alloc_lock, flags);
+		return;
+	}
 
 	if (ent->idx >= 0) {
 		cmd_free_index(cmd, ent->idx);
 		up(ent->page_queue ? &cmd->vars.pages_sem : &cmd->vars.sem);
 	}
+	spin_unlock_irqrestore(&cmd->alloc_lock, flags);
 
 	cmd_free_ent(ent);
-out:
-	spin_unlock_irqrestore(&cmd->alloc_lock, flags);
 }
 
 static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx)
-- 
2.9.4