btrfs: tree-checker: get fs_info from eb in check_leaf_item

We can read fs_info from extent buffer and can drop it from the
parameters.
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/tree-checker.c

@@ -771,8 +771,7 @@ static int check_inode_item(struct btrfs_fs_info *fs_info,
 /*
  * Common point to switch the item-specific validation.
  */
-static int check_leaf_item(struct btrfs_fs_info *fs_info,
-			   struct extent_buffer *leaf,
+static int check_leaf_item(struct extent_buffer *leaf,
 			   struct btrfs_key *key, int slot)
 {
 	int ret = 0;
@@ -795,14 +794,14 @@ static int check_leaf_item(struct btrfs_fs_info *fs_info,
 		break;
 	case BTRFS_CHUNK_ITEM_KEY:
 		chunk = btrfs_item_ptr(leaf, slot, struct btrfs_chunk);
-		ret = btrfs_check_chunk_valid(fs_info, leaf, chunk,
+		ret = btrfs_check_chunk_valid(leaf->fs_info, leaf, chunk,
 					      key->offset);
 		break;
 	case BTRFS_DEV_ITEM_KEY:
-		ret = check_dev_item(fs_info, leaf, key, slot);
+		ret = check_dev_item(leaf->fs_info, leaf, key, slot);
 		break;
 	case BTRFS_INODE_ITEM_KEY:
-		ret = check_inode_item(fs_info, leaf, key, slot);
+		ret = check_inode_item(leaf->fs_info, leaf, key, slot);
 		break;
 	}
 	return ret;
@@ -952,7 +951,7 @@ static int check_leaf(struct btrfs_fs_info *fs_info, struct extent_buffer *leaf,
 			 * Check if the item size and content meet other
 			 * criteria
 			 */
-			ret = check_leaf_item(fs_info, leaf, &key, slot);
+			ret = check_leaf_item(leaf, &key, slot);
 			if (ret < 0)
 				return ret;
 		}