Description: rds: rds_rm_zerocopy_callback() use list_first_entry()
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2173440
Notes:
Bugs:
upstream: released (6.2-rc8) [f753a68980cf4b59a80fe677619da2b1804f526d]
6.1-upstream-stable: released (6.1.12) [1d52bbfd469af69fbcae88c67f160ce1b968e7f3]
5.10-upstream-stable: released (5.10.168) [c53f34ec3fbf3e9f67574118a6bb35ae1146f7ca]
4.19-upstream-stable: released (4.19.273) [909d5eef5ce792bb76d7b5a9b7a6852b813d8cac]
sid: released (6.1.12-1)
5.10-bullseye-security: released (5.10.178-1)
4.19-buster-security: released (4.19.282-1)