f2fs: remove useless parameter of __insert_free_nid()

In current version, @state will only be FREE_NID. This parameter
has no real effect so remove it to keep clean.
Signed-off-by: Liu Song <liu.song11@zte.com.cn>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/node.c

@@ -2108,7 +2108,7 @@ static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
 }
 
 static int __insert_free_nid(struct f2fs_sb_info *sbi,
-			struct free_nid *i, enum nid_state state)
+				struct free_nid *i)
 {
 	struct f2fs_nm_info *nm_i = NM_I(sbi);
 
@@ -2116,9 +2116,7 @@ static int __insert_free_nid(struct f2fs_sb_info *sbi,
 	if (err)
 		return err;
 
-	f2fs_bug_on(sbi, state != i->state);
-	nm_i->nid_cnt[state]++;
-	if (state == FREE_NID)
+	nm_i->nid_cnt[FREE_NID]++;
 	list_add_tail(&i->list, &nm_i->free_nid_list);
 	return 0;
 }
@@ -2241,7 +2239,7 @@ static bool add_free_nid(struct f2fs_sb_info *sbi,
 		}
 	}
 	ret = true;
-	err = __insert_free_nid(sbi, i, FREE_NID);
+	err = __insert_free_nid(sbi, i);
 err_out:
 	if (update) {
 		update_free_nid_bitmap(sbi, nid, ret, build);