drm/bridge: synopsys: dw-dp: Drop useless memory allocation

drm/bridge: synopsys: dw-dp: Drop useless memory allocation

The bridge gets allocated and initialized implicitly via the
devm_drm_bridge_alloc() helper in dw_dp_bind().  However, this is
preceded by an explicit allocation for the same dw_dp struct, which is
never used anywhere as the return from devm_kzalloc() gets immediately
overwritten by the aforementioned helper.

Get rid of the unnecessary and confusing memory allocation.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20260310-drm-rk-fixes-v2-8-645ecfb43f49@collabora.com