powerpc/rfi-flush: Move out of HARDLOCKUP_DETECTOR #ifdef

The backport of the RFI flush support, done by me, has a minor bug in
that the code is inside an #ifdef CONFIG_HARDLOCKUP_DETECTOR, which is
incorrect.

This doesn't matter with common configs because we enable
HARDLOCKUP_DETECTOR, but with future patches it will break the build.
So fix it.

Fixes: c3b82ebe ("powerpc/64s: Add support for RFI flush of L1-D cache")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/powerpc/kernel/setup_64.c

@@ -679,6 +679,7 @@ static int __init disable_hardlockup_detector(void)
 	return 0;
 }
 early_initcall(disable_hardlockup_detector);
+#endif /* CONFIG_HARDLOCKUP_DETECTOR */
 
 #ifdef CONFIG_PPC_BOOK3S_64
 static enum l1d_flush_type enabled_flush_types;
@@ -806,4 +807,3 @@ ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, cha
 	return sprintf(buf, "Vulnerable\n");
 }
 #endif /* CONFIG_PPC_BOOK3S_64 */
-#endif