x86: Correct noinstr qualifiers

The noinstr qualifier is to be specified before the return type in the
same way inline is used.

These 2 cases were missed by previous patches.
Signed-off-by: NIra Weiny <ira.weiny@intel.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Reviewed-by: NTony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200723161405.852613-1-ira.weiny@intel.com

arch/x86/kernel/alternative.c

@@ -1044,7 +1044,7 @@ static __always_inline int patch_cmp(const void *key, const void *elt)
 	return 0;
 }
 
-int noinstr poke_int3_handler(struct pt_regs *regs)
+noinstr int poke_int3_handler(struct pt_regs *regs)
 {
 	struct bp_patching_desc *desc;
 	struct text_poke_loc *tp;

arch/x86/kernel/cpu/mce/core.c

@@ -1212,7 +1212,7 @@ static void kill_me_maybe(struct callback_head *cb)
  * backing the user stack, tracing that reads the user stack will cause
  * potentially infinite recursion.
  */
-void noinstr do_machine_check(struct pt_regs *regs)
+noinstr void do_machine_check(struct pt_regs *regs)
 {
 	DECLARE_BITMAP(valid_banks, MAX_NR_BANKS);
 	DECLARE_BITMAP(toclear, MAX_NR_BANKS);