[PATCH 4/8] x86/mce/AMD: Do not perform shared bank check for future processors

From: Aravind Gopalakrishnan Fam17h and above should not require a check to see if a bank is shared or not. For shared banks, there will always be only one core that has visibility over the MSRs and only that particular core will be allowed to write to the MSRs. Fix the code to return early if

[PATCH 4/8] x86/mce/AMD: Do not perform shared bank check for future processors

From: Aravind Gopalakrishnan Fam17h and above should not require a check to see if a bank is shared or not. For shared banks, there will always be only one core that has visibility over the MSRs and only that particular core will be allowed to write to the MSRs.