NFS: Give "flavor" an initial value to fix a compile warning

The previous patch introduces a compile warning by not assigning an initial
value to the "flavor" variable.  This could only be a problem if the server
returns a supported secflavor list of length zero, but it's better to
fix this before it's ever hit.
Signed-off-by: Anna Schumaker <bjschuma@netapp.com>
Acked-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -7576,7 +7576,7 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
 {
 	int err;
 	struct page *page;
-	rpc_authflavor_t flavor;
+	rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
 	struct nfs4_secinfo_flavors *flavors;
 	struct nfs4_secinfo4 *secinfo;
 	int i;