[PATCH] tools/bootconfig: Fix buf leaks in apply_xbc

[lihongtao]

If data calloc failed, free the buf before return.

Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command")
Signed-off-by: lihongtao <lihong...@kylinos.cn>
---
 tools/bootconfig/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index 643f707b8f1d..ddabde20585f 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -390,8 +390,10 @@ static int apply_xbc(const char *path, const char 
*xbc_path)
 
        /* Backup the bootconfig data */
        data = calloc(size + BOOTCONFIG_ALIGN + BOOTCONFIG_FOOTER_SIZE, 1);
-       if (!data)
+       if (!data) {
+               free(buf);
                return -ENOMEM;
+       }
        memcpy(data, buf, size);
 
        /* Check the data format */
-- 
2.25.1