[PATCH] tools: kwbimage: Fix checksum calculation for v1 images

[Pierre Bourdon]

Recent changes caused fields in the image main header to be modified
after the header checksum had already been computed. Move the checksum
computation to once again be the last operation performed on the header.

Fixes: 2b0980c24027 ("tools: kwbimage: Fill the real header size into the main header")

Signed-off-by: Pierre Bourdon <delroth at gmail.com>
---
 tools/kwbimage.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 875f636c7a..0951d7861c 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -1398,9 +1398,6 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
 					       headersz, image, secure_hdr))
 		return NULL;
 
-	/* Calculate and set the header checksum */
-	main_hdr->checksum = image_checksum8(main_hdr, headersz);
-
 	*imagesz = headersz;
 
 	/* Fill the real header size without padding into the main header */
@@ -1410,6 +1407,9 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
 	main_hdr->headersz_lsb = cpu_to_le16(headersz & 0xFFFF);
 	main_hdr->headersz_msb = (headersz & 0xFFFF0000) >> 16;
 
+	/* Calculate and set the header checksum */
+	main_hdr->checksum = image_checksum8(main_hdr, headersz);
+
 	return image;
 }
 
-- 
2.34.0