cifs: demote DFS referral lookup errors to cFYI

cifs: demote DFS referral lookup errors to cFYI

Now that we call into this routine on every mount, anyone who doesn't
have the upcall configured will get multiple printks about failed lookups.
Reported-and-Tested-by: Martijn Uffing <mp3project@sarijopen.student.utwente.nl>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifs_dfs_ref.c

@@ -141,10 +141,11 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
 
 	rc = dns_resolve_server_name_to_ip(*devname, &srvIP);
 	if (rc < 0) {
-		cERROR(1, "%s: Failed to resolve server part of %s to IP: %d",
+		cFYI(1, "%s: Failed to resolve server part of %s to IP: %d",
 			__func__, *devname, rc);
 		goto compose_mount_options_err;
 	}
+
 	/* md_len = strlen(...) + 12 for 'sep+prefixpath='
 	 * assuming that we have 'unc=' and 'ip=' in
 	 * the original sb_mountdata

fs/cifs/dns_resolve.c

@@ -79,7 +79,7 @@ dns_resolve_server_name_to_ip(const char *unc, char **ip_addr)
 	/* Perform the upcall */
 	rc = dns_query(NULL, hostname, len, NULL, ip_addr, NULL);
 	if (rc < 0)
-		cERROR(1, "%s: unable to resolve: %*.*s",
+		cFYI(1, "%s: unable to resolve: %*.*s",
 			__func__, len, len, hostname);
 	else
 		cFYI(1, "%s: resolved: %*.*s to %s",