net/mlx5: DR, Warn on failure to destroy objects due to refcount

Add WARN_ON_ONCE on refcount checks in SW steering object destructors
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c

@@ -1792,7 +1792,7 @@ mlx5dr_action_create_dest_vport(struct mlx5dr_domain *dmn,
 
 int mlx5dr_action_destroy(struct mlx5dr_action *action)
 {
-	if (refcount_read(&action->refcount) > 1)
+	if (WARN_ON_ONCE(refcount_read(&action->refcount) > 1))
 		return -EBUSY;
 
 	switch (action->action_type) {

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_domain.c

@@ -431,7 +431,7 @@ int mlx5dr_domain_sync(struct mlx5dr_domain *dmn, u32 flags)
 
 int mlx5dr_domain_destroy(struct mlx5dr_domain *dmn)
 {
-	if (refcount_read(&dmn->refcount) > 1)
+	if (WARN_ON_ONCE(refcount_read(&dmn->refcount) > 1))
 		return -EBUSY;
 
 	/* make sure resources are not used by the hardware */

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_matcher.c

@@ -1069,7 +1069,7 @@ int mlx5dr_matcher_destroy(struct mlx5dr_matcher *matcher)
 {
 	struct mlx5dr_table *tbl = matcher->tbl;
 
-	if (refcount_read(&matcher->refcount) > 1)
+	if (WARN_ON_ONCE(refcount_read(&matcher->refcount) > 1))
 		return -EBUSY;
 
 	mlx5dr_domain_lock(tbl->dmn);

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_table.c

@@ -283,7 +283,7 @@ int mlx5dr_table_destroy(struct mlx5dr_table *tbl)
 {
 	int ret;
 
-	if (refcount_read(&tbl->refcount) > 1)
+	if (WARN_ON_ONCE(refcount_read(&tbl->refcount) > 1))
 		return -EBUSY;
 
 	mlx5dr_dbg_tbl_del(tbl);