Use helper function for error printing

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/scripts/code_style.py b/scripts/code_style.py
index 7de223a..068298a 100755
--- a/scripts/code_style.py
+++ b/scripts/code_style.py
@@ -28,6 +28,9 @@
 STDOUT_UTF8 = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
 STDERR_UTF8 = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8')
 
+def print_err(*args):
+    print("Error: ", *args, file=STDERR_UTF8)
+
 def get_src_files() -> List[str]:
     """
     Use git ls-files to get a list of the source files
@@ -41,8 +44,7 @@
             stderr=STDERR_UTF8, check=False)
 
     if result.returncode != 0:
-        print("Error: git ls-files returned: "+str(result.returncode), \
-                file=STDERR_UTF8)
+        print_err("git ls-files returned: "+str(result.returncode))
         return []
     else:
         src_files = str(result.stdout, "utf-8").split()
@@ -59,8 +61,7 @@
     result = subprocess.run([UNCRUSTIFY_EXE, "--version"], \
             stdout=subprocess.PIPE, stderr=subprocess.PIPE, check=False)
     if result.returncode != 0:
-        print("Error getting version: "+str(result.stderr, "utf-8"), \
-                file=STDERR_UTF8)
+        print_err("Could not get Uncrustify version:", str(result.stderr, "utf-8"))
         return ""
     else:
         return str(result.stdout, "utf-8")
@@ -115,8 +116,7 @@
     # Guard against future changes that cause the codebase to require
     # more passes.
     if not check_style_is_correct(src_file_list):
-        print("Error: Code style still incorrect after second run of Uncrustify.", \
-                file=STDERR_UTF8)
+        print("Code style still incorrect after second run of Uncrustify.")
         return 1
     else:
         return 0