ext4: remove useless if check

This if branch is only jumping to 'out' which
is defined just after the branch itself.
Hence this is if-check is a no-op and can be removed.

Address-Coverity-ID: 1647981 ("Incorrect expression  (IDENTICAL_BRANCHES)")
Signed-off-by: Antonio Quartulli <antonio@mandelbit.com>
Link: https://patch.msgid.link/20250721200902.1071-1-antonio@mandelbit.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>