For years after the war Europe became a home for refugees because so many people had been displaced both by the Nazis and all the other collateral damage that conflict does, that's just the ordinary people. Those liberated from the camps were in a worse position. Their homes had either been destroyed, Aryanised or taken over by their own nationals.
When the camps were liberated the biggest problem was helping those left to recover, getting through the inherant disease in the camps, getting food into their digestive systems that they could handle without it killing them. Once in a state of malnutrition you can't just stuff these people full of food and expect them to recover. Once the survivors were ready to be let loose there were transitory camps for them that were clean and they had access to good levels of nutrition and they were assisted back into humanity.
In many cases the Jews primarily wouldn't be allowed back into their own homes. If you try to read Auchwitz, A Warning From History by Laurence Rees it talks to survivors from the Death March out of Auchwitz just before Liberation who went back to their original homes eventually and were forced out of them again by those who had taken over.
After the war was in some cases worse than the periods before the end of the war for many people. You can finds loads of info on Wikipaedia and in your local library