ext4: mark inode dirty after initializing the extent tree

We should mark the inode dirty only after initializing the extent
tree.  Also if we fail during extent initialization we need
to call DQUOT_FREE_INODE.
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>

fs/ext4/ialloc.c

@@ -739,11 +739,6 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode * dir, int mode)
 	if (err)
 		goto fail_free_drop;
 
-	err = ext4_mark_inode_dirty(handle, inode);
-	if (err) {
-		ext4_std_error(sb, err);
-		goto fail_free_drop;
-	}
 	if (test_opt(sb, EXTENTS)) {
 		/* set extent flag only for diretory, file and normal symlink*/
 		if (S_ISDIR(mode) || S_ISREG(mode) || S_ISLNK(mode)) {
@@ -752,10 +747,16 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode * dir, int mode)
 			err = ext4_update_incompat_feature(handle, sb,
 					EXT4_FEATURE_INCOMPAT_EXTENTS);
 			if (err)
-				goto fail;
+				goto fail_free_drop;
 		}
 	}
 
+	err = ext4_mark_inode_dirty(handle, inode);
+	if (err) {
+		ext4_std_error(sb, err);
+		goto fail_free_drop;
+	}
+
 	ext4_debug("allocating inode %lu\n", inode->i_ino);
 	goto really_out;
 fail: