linker: Bail out of rpath logic early if the target doesn't support rpath

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -2096,6 +2096,10 @@ fn add_rpath_args(
     codegen_results: &CodegenResults,
     out_filename: &Path,
 ) {
+    if !sess.target.has_rpath {
+        return;
+    }
+
     // FIXME (#2397): At some point we want to rpath our guesses as to
     // where extern libraries might live, based on the
     // add_lib_search_paths
@@ -2114,7 +2118,6 @@ fn add_rpath_args(
         let rpath_config = RPathConfig {
             libs: &*libs,
             out_filename: out_filename.to_path_buf(),
-            has_rpath: sess.target.has_rpath,
             is_like_osx: sess.target.is_like_osx,
             linker_is_gnu: sess.target.linker_flavor.is_gnu(),
         };