ASoC: imx-audmux: remove unnecessary check of clk_disable_unprepare/clk_prepare_enable

Because clk_disable_unprepare/clk_prepare_enable already checked NULL clock
parameter, so the additional checks are unnecessary, just remove them.

Reported-by: Zeal Robot <[e-mail]>
Signed-off-by: Minghao Chi <[e-mail]>
Acked-by: Shengjiu Wang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/fsl/imx-audmux.c

···
 	uintptr_t port = (uintptr_t)file->private_data;
 	u32 pdcr, ptcr;
 
-	if (audmux_clk) {
-		ret = clk_prepare_enable(audmux_clk);
-		if (ret)
-			return ret;
-	}
+	ret = clk_prepare_enable(audmux_clk);
+	if (ret)
+		return ret;
 
 	ptcr = readl(audmux_base + IMX_AUDMUX_V2_PTCR(port));
 	pdcr = readl(audmux_base + IMX_AUDMUX_V2_PDCR(port));
 
-	if (audmux_clk)
-		clk_disable_unprepare(audmux_clk);
+	clk_disable_unprepare(audmux_clk);
 
 	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!buf)
···
 	if (!audmux_base)
 		return -ENOSYS;
 
-	if (audmux_clk) {
-		ret = clk_prepare_enable(audmux_clk);
-		if (ret)
-			return ret;
-	}
+	ret = clk_prepare_enable(audmux_clk);
+	if (ret)
+		return ret;
 
 	writel(ptcr, audmux_base + IMX_AUDMUX_V2_PTCR(port));
 	writel(pdcr, audmux_base + IMX_AUDMUX_V2_PDCR(port));
 
-	if (audmux_clk)
-		clk_disable_unprepare(audmux_clk);
+	clk_disable_unprepare(audmux_clk);
 
 	return 0;
 }