[PATCH] tools: image-host: Fix potential memory leaks

[Maks Mishin]

For a variable `info.name` memory is allocated when calling the 
`fit_image_setup_sig` function and is lost when the error code is returned.

The situation is similar for the `region_prop` variable, 
the memory for which is allocated by calling the function 
`fit_config_get_regions`.

Signed-off-by: Maks Mishin <maks.mishi...@gmail.com>
---
 tools/image-host.c | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/tools/image-host.c b/tools/image-host.c
index 84095d760c..8d1f6b209e 100644
--- a/tools/image-host.c
+++ b/tools/image-host.c
@@ -237,10 +237,13 @@ static int fit_image_process_sig(const char *keydir, 
const char *keyfile,
        uint value_len;
        int ret;
 
-       if (fit_image_setup_sig(&info, keydir, keyfile, fit, image_name,
+       ret = fit_image_setup_sig(&info, keydir, keyfile, fit, image_name,
                                noffset, require_keys ? "image" : NULL,
-                               engine_id, algo_name))
+                               engine_id, algo_name);
+       if (ret) {
+               free(info.name);
                return -1;
+       }
 
        node_name = fit_get_name(fit, noffset, NULL);
        region.data = data;
@@ -1058,15 +1061,22 @@ static int fit_config_process_sig(const char *keydir, 
const char *keyfile,
        int ret;
 
        node_name = fit_get_name(fit, noffset, NULL);
-       if (fit_config_get_regions(fit, conf_noffset, noffset, &region,
+       ret = fit_config_get_regions(fit, conf_noffset, noffset, &region,
                                   &region_count, &region_prop,
-                                  &region_proplen))
+                                  &region_proplen);
+       if (ret) {
+               free(region_prop);
                return -1;
+       }
 
-       if (fit_image_setup_sig(&info, keydir, keyfile, fit, conf_name, noffset,
+       ret = fit_image_setup_sig(&info, keydir, keyfile, fit, conf_name, 
noffset,
                                require_keys ? "conf" : NULL, engine_id,
-                               algo_name))
+                               algo_name);
+       if (ret) {
+               free(region_prop);
+               free(info.name);
                return -1;
+       }
 
        ret = info.crypto->sign(&info, region, region_count, &value,
                                &value_len);
-- 
2.34.1