Propagate error correctly in the MC Asm parser for leading '$' expressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131918 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 46e01c5..b89efd9 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -553,7 +553,7 @@
 
     StringRef Identifier;
     if (ParseIdentifier(Identifier))
-      return false;
+      return true;
 
     // This is a symbol reference.
     std::pair<StringRef, StringRef> Split = Identifier.split('@');