spi: mediatek: fix wrong error return value on probe

Commit adcbcfea ("spi: mediatek: fix spi clock usage error")
added a new sel_clk but introduced bugs in the error paths since
the wrong struct clk pointers are passed to PTR_ERR().

Fixes: adcbcfea ("spi: mediatek: fix spi clock usage error")
Signed-off-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-mt65xx.c

@@ -585,14 +585,14 @@ static int mtk_spi_probe(struct platform_device *pdev)
 
 	mdata->sel_clk = devm_clk_get(&pdev->dev, "sel-clk");
 	if (IS_ERR(mdata->sel_clk)) {
-		ret = PTR_ERR(mdata->spi_clk);
+		ret = PTR_ERR(mdata->sel_clk);
 		dev_err(&pdev->dev, "failed to get sel-clk: %d\n", ret);
 		goto err_put_master;
 	}
 
 	mdata->spi_clk = devm_clk_get(&pdev->dev, "spi-clk");
 	if (IS_ERR(mdata->spi_clk)) {
-		ret = PTR_ERR(mdata->parent_clk);
+		ret = PTR_ERR(mdata->spi_clk);
 		dev_err(&pdev->dev, "failed to get spi-clk: %d\n", ret);
 		goto err_put_master;
 	}