NFSD fix mismatching type in nfsd4_set_netaddr

Fix __be32 and u32 mismatch in return and assignment.
Reported-by: kbuild test robot <lkp@intel.com>
Fixes: dbd4c2dd8f13 ("NFSD add COPY_NOTIFY operation")
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfsd.h

@@ -388,7 +388,7 @@ void		nfsd_lockd_shutdown(void);
 
 extern const u32 nfsd_suppattrs[3][3];
 
-static inline u32 nfsd4_set_netaddr(struct sockaddr *addr,
+static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr,
 				    struct nfs42_netaddr *netaddr)
 {
 	struct sockaddr_in *sin = (struct sockaddr_in *)addr;