aubinator: report error on unknown device id

Since we're going to stop aubinator without a valid device id, better
report an error. This also silences a Coverity warning.

CID: 1405004
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

src/intel/tools/aubinator_error_decode.c

@@ -635,7 +635,7 @@ read_data_file(FILE *file)
          if (matched == 1) {
             if (!gen_get_device_info(reg, &devinfo)) {
                printf("Unable to identify devid=%x\n", reg);
-               return;
+               exit(EXIT_FAILURE);
             }
 
             disasm = gen_disasm_create(reg);