ASoC: fsl: Fix memory leak in imx-audmux.c

When audmux_clk is used and clk_prepare_enable function succeed,
the memory alloc'd to buf variable is leaked

Signed-off-by: Felipe Pena <felipensp@gmail.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index d3bf71a0ec56..ac869931d7f1 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -66,13 +66,10 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
                                 size_t count, loff_t *ppos)
 {
         ssize_t ret;
-        char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+        char *buf;
         int port = (int)file->private_data;
         u32 pdcr, ptcr;
 
-        if (!buf)
-                return -ENOMEM;
-
         if (audmux_clk) {
                 ret = clk_prepare_enable(audmux_clk);
                 if (ret)
@@ -85,6 +82,10 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
         if (audmux_clk)
                 clk_disable_unprepare(audmux_clk);
 
+        buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+        if (!buf)
+                return -ENOMEM;
+
         ret = snprintf(buf, PAGE_SIZE, "PDCR: %08x\nPTCR: %08x\n",
                        pdcr, ptcr);