net/mlx5: HWS, fixed double free in error flow of definer layout

Fix error flow bug that could lead to double free of a buffer
during a failure to calculate a suitable definer layout.

Fixes: 74a778b4 ("net/mlx5: HWS, added definers handling")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Itamar Gozlan <igozlan@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c

@@ -1925,7 +1925,7 @@ mlx5hws_definer_calc_layout(struct mlx5hws_context *ctx,
 	ret = hws_definer_conv_match_params_to_hl(ctx, mt, match_hl);
 	if (ret) {
 		mlx5hws_err(ctx, "Failed to convert items to header layout\n");
-		goto free_fc;
+		goto free_match_hl;
 	}
 
 	/* Find the match definer layout for header layout match union */
@@ -1946,7 +1946,7 @@ mlx5hws_definer_calc_layout(struct mlx5hws_context *ctx,
 
 free_fc:
 	kfree(mt->fc);
-
+free_match_hl:
 	kfree(match_hl);
 	return ret;
 }