net/mlx5: Fix error handling in load one

We didn't store the result of mlx5_init_once, due to that
mlx5_load_one returned success on error.  Fix that.

Fixes: 59211bd3 ("net/mlx5: Split the load/unload flow into hardware and software flows")
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/main.c

@@ -1123,10 +1123,13 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
 		goto err_stop_poll;
 	}
 
-	if (boot && mlx5_init_once(dev, priv)) {
+	if (boot) {
+		err = mlx5_init_once(dev, priv);
+		if (err) {
 			dev_err(&pdev->dev, "sw objs init failed\n");
 			goto err_stop_poll;
 		}
+	}
 
 	err = mlx5_alloc_irq_vectors(dev);
 	if (err) {