x86/alternatives: Remove 'smp_text_poke_batch_flush()'

It only has a single user left, merge it into smp_text_poke_batch_add()
and remove the helper function.

Signed-off-by: Ingo Molnar <[e-mail]>
Cc: Juergen Gross <[e-mail]>
Cc: "H . Peter Anvin" <[e-mail]>
Cc: Linus Torvalds <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/x86/kernel/alternative.c

···
 		smp_text_poke_batch_process();
 }
 
-static void smp_text_poke_batch_flush(void *addr)
-{
-	lockdep_assert_held(&text_mutex);
-
-	if (text_poke_array.nr_entries == TEXT_POKE_ARRAY_MAX || !text_poke_addr_ordered(addr))
-		smp_text_poke_batch_process();
-}
-
 /**
  * smp_text_poke_batch_add() -- update instruction on live kernel on SMP, batched
  * @addr:	address to patch
···
  */
 void __ref smp_text_poke_batch_add(void *addr, const void *opcode, size_t len, const void *emulate)
 {
-	smp_text_poke_batch_flush(addr);
+	if (text_poke_array.nr_entries == TEXT_POKE_ARRAY_MAX || !text_poke_addr_ordered(addr))
+		smp_text_poke_batch_process();
 	__smp_text_poke_batch_add(addr, opcode, len, emulate);
 }