skip post-build processes when build failed

Signed-off-by: NZhang Peng <zhangpeng280@huawei.com>
Change-Id: I41de65f6356266ef8c77744b7b89c7299612fad8

hb_internal/build/build_process.py

@@ -132,7 +132,7 @@ class Build():
 
     def build(self, full_compile, patch=False, ninja=True, cmd_args=None):
         if 'target_cpu' in str(cmd_args):
-            self.config.target_cpu = cmd_args["target_cpu"]
+            self.config.target_cpu = cmd_args["target_cpu"]
         if 'compile_config' in str(cmd_args):
             self.config.compile_config = cmd_args["compile_config"]
         cmd_list = self.get_cmd(full_compile, patch, ninja, cmd_args)
@@ -151,12 +151,15 @@ class Build():
             raise
         except Exception:
             raise
-        finally:
+        else:
             post_build = PostBuild(self.config)
-            post_build.clean(self.start_time)
             post_build.patch_ohos_para(cmd_args)
             post_build.package_image()
             output_part_rom_status(self.config.root_path)
+        finally:
+            if 'post_build' not in locals():
+                post_build = PostBuild(self.config)
+            post_build.clean(self.start_time)
 
         hb_info(f'{os.path.basename(self.config.out_path)} build success')
         hb_info(f'cost time: {self.build_time}')