drm/msm/dsi_pll_10nm: Remove impossible check

While I'm in here, cut this out, pdev can't be NULL

Reviewed-by: Rob Clark <[e-mail]>
Signed-off-by: Sean Paul <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c

···
 	struct msm_dsi_pll *pll;
 	int ret;
 
-	if (!pdev)
-		return ERR_PTR(-ENODEV);
-
 	pll_10nm = devm_kzalloc(&pdev->dev, sizeof(*pll_10nm), GFP_KERNEL);
 	if (!pll_10nm)
 		return ERR_PTR(-ENOMEM);