Fix loading a spark model on databricks (#5299)

Signed-off-by: Arjun DCunha <arjun.dcunha@databricks.com>

mlflow/spark.py

@@ -614,7 +614,7 @@ def _load_model_databricks(model_uri, dfs_tmpdir):
     # Copy the model to a temp DFS location first. We cannot delete this file, as
     # Spark may read from it at any point.
     fuse_dfs_tmpdir = dbfs_hdfs_uri_to_fuse_path(dfs_tmpdir)
-    os.mkdir(fuse_dfs_tmpdir)
+    os.makedirs(fuse_dfs_tmpdir)
     # Workaround for inability to use shutil.copytree with DBFS FUSE due to permission-denied
     # errors on passthrough-enabled clusters when attempting to copy permission bits for directories
     _shutil_copytree_without_file_permissions(src_dir=local_model_path, dst_dir=fuse_dfs_tmpdir)