[Contrib] Fix error message at callback_get_section_size() (#4221)

* [Contrib] Fix error message at callback_get_section_size()

* Trigger notification

python/tvm/contrib/binutil.py

@@ -22,6 +22,7 @@ from . import util
 from .._ffi.base import py_str
 from ..api import register_func
 
+
 @register_func("tvm_callback_get_section_size")
 def tvm_callback_get_section_size(binary_path, section_name, toolchain_prefix):
     """Finds size of the section in the binary.
@@ -53,7 +54,7 @@ def tvm_callback_get_section_size(binary_path, section_name, toolchain_prefix):
     size_output = size_output.decode("utf-8")
     if size_proc.returncode != 0:
         msg = "error in finding section size:\n"
-        msg += py_str(out)
+        msg += py_str(size_output)
         raise RuntimeError(msg)
 
     # TODO(weberlo): Refactor this method and `*relocate_binary` so they are
@@ -93,6 +94,7 @@ def tvm_callback_get_section_size(binary_path, section_name, toolchain_prefix):
         return section_size + 32
     return section_size
 
+
 @register_func("tvm_callback_relocate_binary")
 def tvm_callback_relocate_binary(
         binary_path, text_addr, rodata_addr, data_addr, bss_addr, toolchain_prefix):