[PATCH -next] NFSD: Fix error return code in nfsd4_interssc_connect()

[Wei Yongjun <weiyongjun1@xxxxxxxxxx>]

'status' has been overwritten to 0 after nfsd4_ssc_setup_dul(), this
cause 0 will be return in vfs_kern_mount() error case. Fix to return
nfserr_inval in this error case.

Fixes: f4e44b393389 ("NFSD: delay unmount source's export after inter-server copy completed.")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 fs/nfsd/nfs4proc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 0bd71c6da81d..2bfb6c408dc6 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1323,6 +1323,7 @@ nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp,
 	ss_mnt = vfs_kern_mount(type, SB_KERNMOUNT, dev_name, raw_data);
 	module_put(type->owner);
 	if (IS_ERR(ss_mnt)) {
+		status = nfserr_inval;
 		if (work)
 			nfsd4_ssc_cancel_dul_work(nn, work);
 		goto out_free_devname;