suppress missing attribute warnings

Attribute existence is dependent on kernel versions. Don't automatically
warn if we fail to find the attribute, let the caller decide how to deal
with it.

Reported-by: Jeffrey Lien <[email protected]>
Signed-off-by: Keith Busch <[email protected]>

Author: keithbusch

nvme-topology.c

@@ -60,11 +60,8 @@ char *nvme_get_ctrl_attr(char *path, const char *attr)
 		goto err_free_path;
 
 	fd = open(attrpath, O_RDONLY);
-	if (fd < 0) {
-		fprintf(stderr, "Failed to open %s: %s\n",
-				attrpath, strerror(errno));
+	if (fd < 0)
 		goto err_free_value;
-	}
 
 	ret = read(fd, value, 1024);
 	if (ret < 0) {