NFSD: Correct type annotations in user xattr helpers

Squelch some sparse warnings:

/home/cel/src/linux/linux/fs/nfsd/vfs.c:2264:13: warning: incorrect type in assignment (different base types)
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2264:13:    expected int err
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2264:13:    got restricted __be32
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2266:24: warning: incorrect type in return expression (different base types)
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2266:24:    expected restricted __be32
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2266:24:    got int err
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2288:13: warning: incorrect type in assignment (different base types)
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2288:13:    expected int err
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2288:13:    got restricted __be32
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2290:24: warning: incorrect type in return expression (different base types)
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2290:24:    expected restricted __be32
/home/cel/src/linux/linux/fs/nfsd/vfs.c:2290:24:    got int err
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/vfs.c

@@ -2259,7 +2259,8 @@ nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char **bufp,
 __be32
 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name)
 {
-	int err, ret;
+	__be32 err;
+	int ret;
 
 	err = fh_verify(rqstp, fhp, 0, NFSD_MAY_WRITE);
 	if (err)
@@ -2283,7 +2284,8 @@ __be32
 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name,
 	      void *buf, u32 len, u32 flags)
 {
-	int err, ret;
+	__be32 err;
+	int ret;
 
 	err = fh_verify(rqstp, fhp, 0, NFSD_MAY_WRITE);
 	if (err)