i2c: meson: fix missing clk_disable_unprepare() on error in meson_i2c_probe()

Fix the missing clk_disable_unprepare() before return
from meson_i2c_probe() in the error handling case.

Fixes: a57f9b4 ("i2c: meson: Use 50% duty cycle for I2C clock")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Author: Yang Yingliang

drivers/i2c/busses/i2c-meson.c

@@ -520,8 +520,10 @@ static int meson_i2c_probe(struct platform_device *pdev)
 	meson_i2c_set_mask(i2c, REG_SLAVE_ADDR,
 			   REG_SLV_SDA_FILTER_MASK | REG_SLV_SCL_FILTER_MASK, 0);
 
-	if (!i2c->data->set_clk_div)
+	if (!i2c->data->set_clk_div) {
+		clk_disable_unprepare(i2c->clk);
 		return -EINVAL;
+	}
 	i2c->data->set_clk_div(i2c, timings.bus_freq_hz);
 
 	ret = i2c_add_adapter(&i2c->adap);