ext2: check err when partial != NULL

Check err when partial == NULL is meaningless because
partial == NULL means getting branch successfully without
error.

CC: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191105045100.7104-1-cgxu519@mykernel.net
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 7004ce581a328b29eebae9e28e220c9fe5c7bbbb..a16c53655e77048e82fdbd439576d250d8ab731a 100644 (file)
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -701,10 +701,13 @@ static int ext2_get_blocks(struct inode *inode,
                if (!partial) {
                        count++;
                        mutex_unlock(&ei->truncate_mutex);
-                       if (err)
-                               goto cleanup;
                        goto got_it;
                }
+
+               if (err) {
+                       mutex_unlock(&ei->truncate_mutex);
+                       goto cleanup;
+               }
        }
 
        /*