drm/msm/dpu: avoid unnecessary check in DPU reservations

Return immediately on failure, this will make dpu reservations
part look cleaner.
Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/522442/
Link: https://lore.kernel.org/r/1676286704-818-4-git-send-email-quic_kalyant@quicinc.com
[DB: fixed merge conflict with b6975693, retain those changes]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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

@@ -635,14 +635,12 @@ static int dpu_encoder_virt_atomic_check(
 		if (ret) {
 			DPU_ERROR_ENC(dpu_enc,
 					"mode unsupported, phys idx %d\n", i);
-			break;
+			return ret;
 		}
 	}
 
 	topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state);
 
-	/* Reserve dynamic resources now. */
-	if (!ret) {
 	/*
 	 * Release and Allocate resources on every modeset
 	 * Dont allocate when active is false.
@@ -654,7 +652,6 @@ static int dpu_encoder_virt_atomic_check(
 			ret = dpu_rm_reserve(&dpu_kms->rm, global_state,
 					drm_enc, crtc_state, topology);
 	}
-	}
 
 	trace_dpu_enc_atomic_check_flags(DRMID(drm_enc), adj_mode->flags);