[llvm] [AArch64] Fix return address auth in tail call epilogues (PR #189484)

[Daniil Kovalev via llvm-commits]

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kovdan01 wrote:

Nit: can we use early return here? We only have 'else' branch after this and nothing else. The indent level is increasing with these new changes, and things become harder to understand. So, I believe that it would be beneficial to get rid of the 'else' branch and decrease the indent level for its body by inserting an early return here in the end of 'if' branch.

See also https://llvm.org/docs/CodingStandards.html#use-early-exits-and-continue-to-simplify-code

https://github.com/llvm/llvm-project/pull/189484