linux/cve-exclusion: correct fixed-version calculation

Current code takes the first version found as "fixed-version".
That is not correct as it is almost always only the oldest backport.
Fix it by unconditionally shift the assigmnet of variable "fixed" so
that we take last instead of first version.

Cc: daniel.turull@ericsson.com
(From OE-Core rev: 68f8e58a249c8adef18e63f0841e8bfea16f354e)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/linux/generate-cve-exclusions.py

@@ -67,10 +67,9 @@ def get_fixed_versions(cve_info, base_version):
 
                 if not first_affected:
                     first_affected = v
-                    fixed = less_than
+                fixed = less_than
                 if base_version < v and v < next_version:
                     first_affected = v
-                    fixed = less_than
                     fixed_backport = less_than
 
     return first_affected, fixed, fixed_backport