mei: rename mei_free_cb_private to mei_io_cb_free

1. cb_private was an old name that we depriacated in earlier
cleanups

2. we also group the funcion declaration with other _io_
functions

3. Don't check cb for NULL as mei_io_cb_free is NULL safe

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 2e46291..518e07e 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -124,7 +124,7 @@
 				mei_send_flow_control(dev, &dev->iamthif_cl);
 			}
 			/* free all allocated buffers */
-			mei_free_cb_private(cb_pos);
+			mei_io_cb_free(cb_pos);
 			cb_pos = NULL;
 			removed = true;
 		}
@@ -169,7 +169,7 @@
 		/* check file and iamthif current cb association */
 		if (dev->iamthif_current_cb->file_object == file) {
 			/* remove cb */
-			mei_free_cb_private(dev->iamthif_current_cb);
+			mei_io_cb_free(dev->iamthif_current_cb);
 			dev->iamthif_current_cb = NULL;
 			removed = true;
 		}
@@ -332,7 +332,7 @@
 		file->private_data = NULL;
 
 		if (cb) {
-			mei_free_cb_private(cb);
+			mei_io_cb_free(cb);
 			cb = NULL;
 		}
 
@@ -504,7 +504,7 @@
 	/* Remove entry from read list */
 	if (cb_pos)
 		list_del(&cb_pos->list);
-	mei_free_cb_private(cb);
+	mei_io_cb_free(cb);
 	cl->reading_state = MEI_IDLE;
 	cl->read_cb = NULL;
 	cl->read_pending = 0;
@@ -651,7 +651,7 @@
 			    cl->reading_state == MEI_READ_COMPLETE) {
 				*offset = 0;
 				list_del(&write_cb->list);
-				mei_free_cb_private(write_cb);
+				mei_io_cb_free(write_cb);
 				write_cb = NULL;
 			}
 		}
@@ -663,7 +663,7 @@
 		write_cb = find_read_list_entry(dev, cl);
 		if (write_cb) {
 			list_del(&write_cb->list);
-			mei_free_cb_private(write_cb);
+			mei_io_cb_free(write_cb);
 			write_cb = NULL;
 			cl->reading_state = MEI_IDLE;
 			cl->read_cb = NULL;
@@ -778,7 +778,7 @@
 
 unlock_dev:
 	mutex_unlock(&dev->device_lock);
-	mei_free_cb_private(write_cb);
+	mei_io_cb_free(write_cb);
 	return rets;
 }