[PATCH 10/10] afs: Fix missing/incorrect unlocking of RCU read lock

[David Howells]

In afs_proc_addr_prefs_show(), we need to unlock the RCU read lock in both
places before returning (and not lock it again).

Fixes: f94f70d39cc2 ("afs: Provide a way to configure address priorities")
Reported-by: kernel test robot <oliver.s...@intel.com>
Closes: 
https://lore.kernel.org/oe-lkp/202401172243.cd53d5f6-oliver.s...@intel.com
Signed-off-by: David Howells <dhowe...@redhat.com>
cc: linux-...@lists.infradead.org
cc: linux-fsde...@vger.kernel.org
---
 fs/afs/proc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 3bd02571f30d..15eab053af6d 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -166,7 +166,7 @@ static int afs_proc_addr_prefs_show(struct seq_file *m, 
void *v)
 
        if (!preflist) {
                seq_puts(m, "NO PREFS\n");
-               return 0;
+               goto out;
        }
 
        seq_printf(m, "PROT SUBNET                                      PRIOR 
(v=%u n=%u/%u/%u)\n",
@@ -191,7 +191,8 @@ static int afs_proc_addr_prefs_show(struct seq_file *m, 
void *v)
                }
        }
 
-       rcu_read_lock();
+out:
+       rcu_read_unlock();
        return 0;
 }