drm/msm: remove exra drm_kms_helper_poll_init() call

It seems during rebases I have left a call to drm_kms_helper_poll_init()
which is not guarded by the (priv->kms_init) check. This leads to the
crash for the boards which don't have KMS output. Drop this call, as
there is a correctly guarded one next to the one being removed.

Fixes: 506efcba3129 ("drm/msm: carve out KMS code from msm_drv.c")
Signed-off-by: Dmitry Baryshkov <[e-mail]>
Reviewed-by: Abhinav Kumar <[e-mail]>
Patchwork: https://patchwork.freedesktop.org/patch/566299/
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Abhinav Kumar <[e-mail]>

drivers/gpu/drm/msm/msm_drv.c

···
 	if (ret)
 		goto err_msm_uninit;
 
-	drm_kms_helper_poll_init(ddev);
-
 	if (priv->kms_init) {
 		drm_kms_helper_poll_init(ddev);
 		msm_fbdev_setup(ddev);