drm: ttm: correct ttm_range_manager kernel-doc notation

Fix kernel-doc warnings in ttm_range_manager.c:

drivers/gpu/drm/ttm/ttm_range_manager.c:144: warning: expecting prototype for ttm_range_man_init(). Prototype was for ttm_range_man_init_nocheck() instead
drivers/gpu/drm/ttm/ttm_range_manager.c:178: warning: expecting prototype for ttm_range_man_fini(). Prototype was for ttm_range_man_fini_nocheck() instead

Also fix subsequent warnings from scripts/kernel-doc.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20211121155453.29736-1-rdunlap@infradead.orgSigned-off-by: Christian König <christian.koenig@amd.com>

drivers/gpu/drm/ttm/ttm_range_manager.c

@@ -128,15 +128,17 @@ static const struct ttm_resource_manager_func ttm_range_manager_func = {
 };
 
 /**
- * ttm_range_man_init
+ * ttm_range_man_init_nocheck - Initialise a generic range manager for the
+ * selected memory type.
  *
  * @bdev: ttm device
  * @type: memory manager type
  * @use_tt: if the memory manager uses tt
  * @p_size: size of area to be managed in pages.
  *
- * Initialise a generic range manager for the selected memory type.
  * The range manager is installed for this device in the type slot.
+ *
+ * Return: %0 on success or a negative error code on failure
  */
 int ttm_range_man_init_nocheck(struct ttm_device *bdev,
 		       unsigned type, bool use_tt,
@@ -166,12 +168,13 @@ int ttm_range_man_init_nocheck(struct ttm_device *bdev,
 EXPORT_SYMBOL(ttm_range_man_init_nocheck);
 
 /**
- * ttm_range_man_fini
+ * ttm_range_man_fini_nocheck - Remove the generic range manager from a slot
+ * and tear it down.
  *
  * @bdev: ttm device
  * @type: memory manager type
  *
- * Remove the generic range manager from a slot and tear it down.
+ * Return: %0 on success or a negative error code on failure
  */
 int ttm_range_man_fini_nocheck(struct ttm_device *bdev,
 		       unsigned type)