firmware: move completing fw into a helper

This will be re-used later through a new extensible interface.
Reviewed-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Kees Cook <keescook@chromium.org>

drivers/base/firmware_class.c

@@ -322,6 +322,15 @@ static int fw_read_file_contents(struct file *file, struct firmware_buf *fw_buf)
 	return rc;
 }
 
+static void fw_finish_direct_load(struct device *device,
+				  struct firmware_buf *buf)
+{
+	mutex_lock(&fw_lock);
+	set_bit(FW_STATUS_DONE, &buf->status);
+	complete_all(&buf->completion);
+	mutex_unlock(&fw_lock);
+}
+
 static int fw_get_filesystem_firmware(struct device *device,
 				       struct firmware_buf *buf)
 {
@@ -363,10 +372,7 @@ static int fw_get_filesystem_firmware(struct device *device,
 	if (!rc) {
 		dev_dbg(device, "direct-loading %s\n",
 			buf->fw_id);
-		mutex_lock(&fw_lock);
-		set_bit(FW_STATUS_DONE, &buf->status);
-		complete_all(&buf->completion);
-		mutex_unlock(&fw_lock);
+		fw_finish_direct_load(device, buf);
 	}
 
 	return rc;