intel/tools/error_decode: Simply error message handling

In the code path without arguments it tries 3 different paths and error
messages are overwritten one by other, in this case any of those
error messages are irrelevant.

For the code path with arguments is similar, as it already have a
fprintf(stderr) in the caller of open_error_state_file().

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27728>

src/intel/tools/aubinator_error_decode.c

@@ -861,17 +861,8 @@ open_error_state_file(const char *path)
                break;
          }
       }
-      if (!file) {
-         fprintf(stderr, "Failed to find i915_error_state beneath %s\n",
-                 path);
-         exit(EXIT_FAILURE);
-      }
    } else {
       file = fopen(path, "r");
-      if (!file) {
-         fprintf(stderr, "Failed to open %s: %s\n", path, strerror(errno));
-         exit(EXIT_FAILURE);
-      }
    }
 
    return file;