livepatch: Remove module_disable_ro() usage

With arch_klp_init_object_loaded() gone, and apply_relocate_add() now
using text_poke(), livepatch no longer needs to use module_disable_ro().

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Author: jpoimboe

kernel/livepatch/core.c

@@ -777,7 +777,6 @@ static int klp_init_object_loaded(struct klp_patch *patch,
 	if (klp_is_module(obj)) {
 
 		mutex_lock(&text_mutex);
-		module_disable_ro(patch->mod);
 
 		/*
 		 * Only write module-specific relocations here
@@ -787,7 +786,6 @@ static int klp_init_object_loaded(struct klp_patch *patch,
 		 */
 		ret = klp_apply_object_relocs(patch, obj);
 
-		module_enable_ro(patch->mod, true);
 		mutex_unlock(&text_mutex);
 
 		if (ret)