drm/amd/display: Don't call find_analog_engine() twice

drm/amd/display: Don't call find_analog_engine() twice

The analog engine is already there in the link_analog_engine
variable and assigned to enc_init_data.analog_engine already.

I suspect this was a rebase mistake.

Fixes: 436d0d22aa70 ("drm/amd/display: Pass proper DAC encoder ID to VBIOS")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Tested-by: Mauro Rossi <issor.oruam@gmail.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>