[CIFS] have cifs_get_spnego_key get the hostname from TCP_Server_Info

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index d79eee4..c466b56 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -73,12 +73,13 @@
 #define MAX_IPV6_ADDR_LEN 42 /* eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/60 */
 /* get a key struct with a SPNEGO security blob, suitable for session setup */
 struct key *
-cifs_get_spnego_key(struct cifsSesInfo *sesInfo, const char *hostname)
+cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
 {
 	struct TCP_Server_Info *server = sesInfo->server;
 	char *description, *dp;
 	size_t desc_len;
 	struct key *spnego_key;
+	const char *hostname = server->hostname;
 
 	/* BB: come up with better scheme for determining length */
 	/* length of fields (with semicolons): ver=0xyz ipv4= ipaddress host=