memory: mtk-smi: Use devm_clk_get_enabled()

Replace devm_clk_get() and clk_prepare_enable() with
devm_clk_get_enabled() in .probe().

Fix the bug of missing clk_disable_unprepare() in .remove() by
using devm_clk_get_enabled() that can disables and unprepares
it automatically on driver detach.

Fixes: 3c8f4ad ("memory/mediatek: add support for mt2701")
Cc: honghui.zhang@mediatek.com
Signed-off-by: Rong Qianfeng <rongqianfeng@vivo.com>
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20240821032558.43052-1-rongqianfeng@vivo.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: qianfengrong

drivers/memory/mtk-smi.c

@@ -771,13 +771,9 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
 		if (IS_ERR(common->smi_ao_base))
 			return PTR_ERR(common->smi_ao_base);
 
-		common->clk_async = devm_clk_get(dev, "async");
+		common->clk_async = devm_clk_get_enabled(dev, "async");
 		if (IS_ERR(common->clk_async))
 			return PTR_ERR(common->clk_async);
-
-		ret = clk_prepare_enable(common->clk_async);
-		if (ret)
-			return ret;
 	} else {
 		common->base = devm_platform_ioremap_resource(pdev, 0);
 		if (IS_ERR(common->base))