There is a tradition In Sahih Bukhari, Book 64, Hadith 368 in which The Prophet (pbuh) stated clearly his low opinion on what Khalid had committed:
The Prophet (ﷺ) sent Khalid bin Al-Walid to the tribe of Jadhima and Khalid invited them to Islam but they could not express themselves by saying, "Aslamna (i.e. we have embraced Islam)," but they started saying "Saba'na! Saba'na (i.e. we have come out of one religion to another)." Khalid kept on killing (some of) them and taking (some of) them as captives and gave every one of us his Captive. When there came the day then Khalid ordered that each man (i.e. Muslim soldier) should kill his captive, I said, "By Allah, I will not kill my captive, and none of my companions will kill his captive." When we reached the Prophet, we mentioned to him the whole story. On that, the Prophet (ﷺ) raised both his hands and said twice, "O Allah! I am free from what Khalid has done."
knowing that The Prophet (pbuh) did not please with him, can we say that Allah was pleased with Khalid bin Al-Walid by mentioning "رضی الله عنه" after his name?