ima: Simplify ima_eventsig_init()

The "goto out" statement doesn't have any purpose since there's no cleanup
to be done when returning early, so remove it. This also makes the rc
variable unnecessary so remove it as well.

Also, the xattr_len and fmt variables are redundant so remove them as well.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>

security/integrity/ima/ima_template_lib.c

@@ -378,16 +378,11 @@ int ima_eventname_ng_init(struct ima_event_data *event_data,
 int ima_eventsig_init(struct ima_event_data *event_data,
 		      struct ima_field_data *field_data)
 {
-	enum data_formats fmt = DATA_FMT_HEX;
 	struct evm_ima_xattr_data *xattr_value = event_data->xattr_value;
-	int xattr_len = event_data->xattr_len;
-	int rc = 0;
 
 	if ((!xattr_value) || (xattr_value->type != EVM_IMA_XATTR_DIGSIG))
-		goto out;
+		return 0;
 
-	rc = ima_write_template_field_data(xattr_value, xattr_len, fmt,
-					   field_data);
-out:
-	return rc;
+	return ima_write_template_field_data(xattr_value, event_data->xattr_len,
+					     DATA_FMT_HEX, field_data);
 }