f2fs: simplify return value handling in f2fs_fsync_node_pages

Always assign ret where the error happens, and jump to out instead
of multiple loop exit conditions to prepare for changes in the
__write_node_folio calling convention.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: Christoph Hellwig

fs/f2fs/node.c

@@ -1871,31 +1871,30 @@ int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
 			if (!folio_clear_dirty_for_io(folio))
 				goto continue_unlock;
 
-			ret = __write_node_folio(folio, atomic &&
+			if (__write_node_folio(folio, atomic &&
 						folio == last_folio,
 						&submitted, wbc, true,
-						FS_NODE_IO, seq_id);
-			if (ret) {
+						FS_NODE_IO, seq_id)) {
 				folio_unlock(folio);
 				f2fs_folio_put(last_folio, false);
-				break;
-			} else if (submitted) {
-				nwritten++;
+				folio_batch_release(&fbatch);
+				ret = -EIO;
+				goto out;
 			}
+			if (submitted)
+				nwritten++;
 
 			if (folio == last_folio) {
 				f2fs_folio_put(folio, false);
+				folio_batch_release(&fbatch);
 				marked = true;
-				break;
+				goto out;
 			}
 		}
 		folio_batch_release(&fbatch);
 		cond_resched();
-
-		if (ret || marked)
-			break;
 	}
-	if (!ret && atomic && !marked) {
+	if (atomic && !marked) {
 		f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx",
 			   ino, last_folio->index);
 		folio_lock(last_folio);
@@ -1907,7 +1906,7 @@ int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
 out:
 	if (nwritten)
 		f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE);
-	return ret ? -EIO : 0;
+	return ret;
 }
 
 static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data)