phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init()

Use clk_disable_unprepare() in the error path of mtk_phy_init() to fix
some resource leaks.
Reported-by: Nkernel test robot <lkp@intel.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: NChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1621420659-15858-1-git-send-email-yangtiezhu@loongson.cnSigned-off-by: NVinod Koul <vkoul@kernel.org>

drivers/phy/mediatek/phy-mtk-tphy.c

@@ -949,6 +949,8 @@ static int mtk_phy_init(struct phy *phy)
 		break;
 	default:
 		dev_err(tphy->dev, "incompatible PHY type\n");
+		clk_disable_unprepare(instance->ref_clk);
+		clk_disable_unprepare(instance->da_ref_clk);
 		return -EINVAL;
 	}