x86/microcode/AMD: Merge early_apply_microcode() into its single callsite

commit dc156750 upstream

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20250211163648.30531-4-bp@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>