i2c: wmt: Fix an error handling path in wmt_i2c_probe()

wmt_i2c_reset_hardware() calls clk_prepare_enable(). So, should an error
occur after it, it should be undone by a corresponding
clk_disable_unprepare() call, as already done in the remove function.

Fixes: 560746e ("i2c: vt8500: Add support for I2C bus on Wondermedia SoCs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>

Author: tititiou36

drivers/i2c/busses/i2c-wmt.c

@@ -378,11 +378,15 @@ static int wmt_i2c_probe(struct platform_device *pdev)
 
 	err = i2c_add_adapter(adap);
 	if (err)
-		return err;
+		goto err_disable_clk;
 
 	platform_set_drvdata(pdev, i2c_dev);
 
 	return 0;
+
+err_disable_clk:
+	clk_disable_unprepare(i2c_dev->clk);
+	return err;
 }
 
 static void wmt_i2c_remove(struct platform_device *pdev)