Merge branch 'vcap_get_rule-return-value'

Ruan Jinjie says:

====================
net: Update and fix return value check for vcap_get_rule()

As Simon Horman suggests, update vcap_get_rule() to always
return an ERR_PTR() and update the error detection conditions to
use IS_ERR(), which would be more cleaner.

So se IS_ERR() to update the return value and fix the issue
in lan966x_ptp_add_trap().

Changes in v2:
- Update vcap_get_rule() to always return an ERR_PTR().
- Update the return value fix in lan966x_ptp_add_trap().
- Update the return value check in sparx5_tc_free_rule_resources().
====================

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>