intel/tools/error_decode: Fix parsing in Xe decoder

xe_topic can't be inside of the for loop otherwise it will be set to
TOPIC_INVALID at every iteration.

TOPIC_INVALID was added after it was reviewed by Lionel because CI
complained that xe_topic may be not initialized, turns out leaving it
not initialized was causing the xe_topic value to keep the value set
in the previous interation makeing the parser to work by luck.

Fixes: 90e38bbb3b ("intel/tools/error_decode: Parse Xe KMD error dump file")
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27888>

src/intel/tools/aubinator_error_decode_xe.c

@@ -257,6 +257,14 @@ read_xe_data_file(FILE *file,
    struct xe_vm xe_vm;
    char *line = NULL;
    size_t line_size;
+   enum  {
+      TOPIC_DEVICE = 0,
+      TOPIC_GUC_CT,
+      TOPIC_JOB,
+      TOPIC_HW_ENGINES,
+      TOPIC_VM,
+      TOPIC_INVALID,
+   } xe_topic = TOPIC_INVALID;
 
    xe_vm_init(&xe_vm);
 
@@ -268,14 +276,6 @@ read_xe_data_file(FILE *file,
          "**** HW Engines ****",
          "**** VM state ****",
       };
-      enum  {
-         TOPIC_DEVICE = 0,
-         TOPIC_GUC_CT,
-         TOPIC_JOB,
-         TOPIC_HW_ENGINES,
-         TOPIC_VM,
-         TOPIC_INVALID,
-      } xe_topic = TOPIC_INVALID;
       bool topic_changed = false;
       bool print_line = true;