Fixed handling of bad checksums with "mkimage -l"
diff --git a/tools/mkimage.c b/tools/mkimage.c
index 5222bb2..fea3e5b 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -277,7 +277,8 @@
 	 */
 	if (xflag) {
 		if (ep != addr + sizeof(image_header_t)) {
-			fprintf (stderr, "%s: For XIP, the entry point must be the load addr + %lu\n",
+			fprintf (stderr,
+				"%s: For XIP, the entry point must be the load addr + %lu\n",
 				cmdname,
 				(unsigned long)sizeof(image_header_t));
 			exit (EXIT_FAILURE);
@@ -347,8 +348,9 @@
 
 		if (crc32 (0, data, len) != checksum) {
 			fprintf (stderr,
-				"*** Warning: \"%s\" has bad header checksum!\n",
-				imagefile);
+				"%s: ERROR: \"%s\" has bad header checksum!\n",
+				cmdname, imagefile);
+			exit (EXIT_FAILURE);
 		}
 
 		data = (char *)(ptr + sizeof(image_header_t));
@@ -356,8 +358,9 @@
 
 		if (crc32 (0, data, len) != ntohl(hdr->ih_dcrc)) {
 			fprintf (stderr,
-				"*** Warning: \"%s\" has corrupted data!\n",
-				imagefile);
+				"%s: ERROR: \"%s\" has corrupted data!\n",
+				cmdname, imagefile);
+			exit (EXIT_FAILURE);
 		}
 
 		/* for multi-file images we need the data part, too */