cxl/region: Simplify switch port target setup control flow

cxl_switch_port_setup_targets() searches the decoder's existing targets
for the endpoint's downstream port. On a match it checks the peer position
and jumps to an out_target_set label to log the target. Otherwise it jumps
to an add_target label, skipping the interleave calculation and decoder
setup that only the first endpoint to reach a port needs.

Return the peer check result directly when the downstream port is already
a target, and make the first endpoint's decoder setup the else branch of
the target search. Both labels go away.

Returning directly after peer validation also removes a misleading debug
message that reported a reused target as a new assignment, with a bad
index.

Suggested-by: Li Ming <ming.li@zohomail.com>
Suggested-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Link: https://patch.msgid.link/901d24894022720ac56aed9c172d7a4682a26cd7.1793649898.git.alison.schofield@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

0 files changed, 0 insertions, 0 deletions