[PATCH] nfs/blocklayout: fput() needed for ENODEV error flow

[cel@kernel.org]

From: Chuck Lever <chuck.lever@oracle.com>

A recently-added error flow needs to fput() the block device just
like the other error flows in this area; otherwise the device is
leaked.

Fixes: d76c769c8db4 ("pnfs/blocklayout: Don't add zero-length pnfs_block_dev")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfs/blocklayout/dev.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c
index 93ef7f864980..519c310c745d 100644
--- a/fs/nfs/blocklayout/dev.c
+++ b/fs/nfs/blocklayout/dev.c
@@ -351,8 +351,10 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
 	d->map = bl_map_simple;
 	d->pr_key = v->scsi.pr_key;
 
-	if (d->len == 0)
-		return -ENODEV;
+	if (d->len == 0) {
+		error = -ENODEV;
+		goto out_blkdev_put;
+	}
 
 	pr_info("pNFS: using block device %s (reservation key 0x%llx)\n",
 		file_bdev(d->bdev_file)->bd_disk->disk_name, d->pr_key);
-- 
2.45.1