Remove unreachable 'return true' always dominated by 'return Error' or 'return false'.

llvm-svn: 203171

llvm/lib/MC/MCParser/AsmParser.cpp

@@ -805,9 +805,8 @@ bool AsmParser::parsePrimaryExpr(const MCExpr *&Res, SMLoc &EndLoc) {
                                         getContext());
           EndLoc = FirstTokenLoc;
           return false;
-        } else
-          return Error(FirstTokenLoc, "invalid token in expression");
-        return true;
+        }
+        return Error(FirstTokenLoc, "invalid token in expression");
       }
     }
     // Parse symbol variant