diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9c938ff0f98645250ae20e2d1d5f6413a1a4c193..4c9cd5e994cf37c046487cd13a1e69db2a269f65 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3480,7 +3480,7 @@ static int ext4_iomap_overwrite_begin(struct inode *inode, loff_t offset,
 	 */
 	flags &= ~IOMAP_WRITE;
 	ret = ext4_iomap_begin(inode, offset, length, flags, iomap, srcmap);
-	WARN_ON_ONCE(iomap->type != IOMAP_MAPPED);
+	WARN_ON_ONCE(!ret && iomap->type != IOMAP_MAPPED);
 	return ret;
 }