ASoC: fsl: Use kcalloc() instead of kzalloc()

Use devm_kcalloc() in fsl_sai_read_dlcfg() and imx_audmux_probe() to gain
built-in overflow protection, making memory allocation safer when
calculating allocation size compared to explicit multiplication.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://patch.msgid.link/20250820123423.470486-3-rongqianfeng@vivo.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: qianfengrong

sound/soc/fsl/fsl_sai.c

@@ -1345,7 +1345,7 @@ static int fsl_sai_read_dlcfg(struct fsl_sai *sai)
 
 	num_cfg = elems / 3;
 	/*  Add one more for default value */
-	cfg = devm_kzalloc(&pdev->dev, (num_cfg + 1) * sizeof(*cfg), GFP_KERNEL);
+	cfg = devm_kcalloc(&pdev->dev, num_cfg + 1, sizeof(*cfg), GFP_KERNEL);
 	if (!cfg)
 		return -ENOMEM;
 

sound/soc/fsl/imx-audmux.c

@@ -305,7 +305,7 @@ static int imx_audmux_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	regcache = devm_kzalloc(&pdev->dev, sizeof(u32) * reg_max, GFP_KERNEL);
+	regcache = devm_kcalloc(&pdev->dev, reg_max, sizeof(u32), GFP_KERNEL);
 	if (!regcache)
 		return -ENOMEM;