[llvm] [MachineFrameInfo] Refactoring with computeMaxcallFrameSize() (NFC) (PR #78001)

[Matt Arsenault via llvm-commits]

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@@ -69,6 +72,15 @@ bool FinalizeISel::runOnMachineFunction(MachineFunction &MF) {
     }
   }
 
+  for (auto &MBB : MF)
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arsenm wrote:

I don't really think it's worth adding an extra loop for it. It doesn't seem like it would be too bad to require custom inserters to set this. It's more OK if we could catch this with the verifier 

https://github.com/llvm/llvm-project/pull/78001