usb: dwc3: meson-g12a: disable clk on error handling path in probe

dwc3_meson_g12a_probe() does not invoke clk_bulk_disable_unprepare()
on one error handling path. This patch fixes that.

Fixes: 347052e3 ("usb: dwc3: meson-g12a: fix USB2 PHY initialization on G12A and A1 SoCs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20201215025459.91794-1-zhengzengkai@huawei.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>