Copy the correct mapping file for retrace_lib

Bug: b/283881148
Change-Id: Id87c9431d2791a2bffcdade05e904f9c4913b4f2
diff --git a/tools/r8_release.py b/tools/r8_release.py
index 347b29b..0491a0d 100755
--- a/tools/r8_release.py
+++ b/tools/r8_release.py
@@ -403,11 +403,10 @@
       download_file(options.version, 'r8lib-exclude-deps.jar', 'lib.jar')
       download_file(
           options.version, 'r8lib-exclude-deps.jar.map', 'lib.jar.map')
-      download_file(
-          options.version, 'r8lib-exclude-deps.jar.map', 'retrace_lib.jar.map')
       download_file(options.version, 'desugar_jdk_libs_configuration.jar',
                     'desugar_jdk_libs_configuration.jar')
       download_file(options.version, 'r8retrace-exclude-deps.jar', 'retrace_lib.jar')
+      download_file(options.version, 'r8retrace-exclude-deps.jar.map', 'retrace_lib.jar.map')
       g4_open('METADATA')
       metadata_path = os.path.join(third_party_r8, 'METADATA')
       match_count = 0