Fix RegExp.prototype.compile error case

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index d8fdafbd654ee9a8ce517e931d0ed75a88970cd1..9842fe90fd02d0fdd0881b465be9b21ade98c248 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -15425,6 +15425,9 @@ MaybeHandle<JSRegExp> JSRegExp::Initialize(Handle<JSRegExp> regexp,
   ASSIGN_RETURN_ON_EXCEPTION(isolate, escaped_source,
                              EscapeRegExpSource(isolate, source), JSRegExp);
 
+  RETURN_ON_EXCEPTION(isolate, RegExpImpl::Compile(regexp, source, flags),
+                      JSRegExp);
+
   regexp->set_source(*escaped_source);
   regexp->set_flags(Smi::FromInt(flags));
 
@@ -15445,9 +15448,6 @@ MaybeHandle<JSRegExp> JSRegExp::Initialize(Handle<JSRegExp> regexp,
         .Check();
   }
 
-  RETURN_ON_EXCEPTION(isolate, RegExpImpl::Compile(regexp, source, flags),
-                      JSRegExp);
-
   return regexp;
 }