Fix: output error message after the stdout

Change-Id: I89d08ea6868b84dfdea0e6c6e980fb94415a40b9
diff --git a/trsync/utils/shell.py b/trsync/utils/shell.py
index c532be6..dbe7043 100644
--- a/trsync/utils/shell.py
+++ b/trsync/utils/shell.py
@@ -35,9 +35,9 @@
                                    stderr=subprocess.PIPE,
                                    shell=True)
         out, err = process.communicate()
+        self.logger.debug(out)
         if err:
             self.logger.error(err)
-        self.logger.debug(out)
         exitcode = process.returncode
         if process.returncode != 0 and raise_error:
             msg = '"{cmd}" failed. Exit code == {exitcode}'\