drm/msm/dpu: simplify and unify dpu_encoder_get_intf and dpu_encoder_get_wb

Remove extra nestting level from the dpu_encoder_get_intf(), replacing it
with the explicit return in case the INTF_WB was passed to the function.

While we are at it, also change dpu_encoder_get_wb() to also use
explicit return rather than the goto.
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/491189/
Link: https://lore.kernel.org/r/20220625003028.383259-1-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c

@@ -1255,12 +1255,13 @@ static enum dpu_intf dpu_encoder_get_intf(const struct dpu_mdss_cfg *catalog,
 {
 	int i = 0;
 
-	if (type != INTF_WB) {
-		for (i = 0; i < catalog->intf_count; i++) {
-			if (catalog->intf[i].type == type
-				&& catalog->intf[i].controller_id == controller_id) {
-				return catalog->intf[i].id;
-			}
+	if (type == INTF_WB)
+		return INTF_MAX;
+
+	for (i = 0; i < catalog->intf_count; i++) {
+		if (catalog->intf[i].type == type
+		    && catalog->intf[i].controller_id == controller_id) {
+			return catalog->intf[i].id;
 		}
 	}
 
@@ -1273,14 +1274,13 @@ static enum dpu_wb dpu_encoder_get_wb(const struct dpu_mdss_cfg *catalog,
 	int i = 0;
 
 	if (type != INTF_WB)
-		goto end;
+		return WB_MAX;
 
 	for (i = 0; i < catalog->wb_count; i++) {
 		if (catalog->wb[i].id == controller_id)
 			return catalog->wb[i].id;
 	}
 
-end:
 	return WB_MAX;
 }