To fix it, goto /etc/yum.repos.d
and "rm googl...."
I’m not sure why this file is created but it’s not necessary.
Delete it and the problem goes away.
Yum will start behaving normally again.
now check it in your country
If you have got VPN account, connect to your vpn and try again.
and if you don't you should use proxy server. write following line before updating yum
Google block ip from iran
you can rm /etc/yum.repos.d/google*
after yum update