fdtget.c: Fix memory leak

CID 132823 (#1 of 1): Resource leak (RESOURCE_LEAK)
5. leaked_storage: Variable blob going out of scope leaks the storage it points to.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

fdtget.c

@@ -266,14 +266,20 @@ static int do_fdtget(struct display_info *disp, const char *filename,
 				continue;
 			} else {
 				report_error(arg[i], node);
+				free(blob);
 				return -1;
 			}
 		}
 		prop = args_per_step == 1 ? NULL : arg[i + 1];
 
-		if (show_data_for_item(blob, disp, node, prop))
+		if (show_data_for_item(blob, disp, node, prop)) {
+			free(blob);
 			return -1;
 		}
+	}
+
+	free(blob);
+
 	return 0;
 }