[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.mishinFZ at 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