drm/msm/dsi: Drop unnecessary -ENOMEM message

Kernel core already prints detailed report about memory allocation
failures, so drivers should not have their own error messages.

Reviewed-by: Abhinav Kumar <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Dmitry Baryshkov <[e-mail]>
Patchwork: https://patchwork.freedesktop.org/patch/637308/
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>

drivers/gpu/drm/msm/dsi/dsi_host.c

···
 		return dev_err_probe(&pdev->dev, ret, "%s: unable to initialize dsi clks\n", __func__);
 
 	msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL);
-	if (!msm_host->rx_buf) {
-		pr_err("%s: alloc rx temp buf failed\n", __func__);
+	if (!msm_host->rx_buf)
 		return -ENOMEM;
-	}
 
 	ret = devm_pm_opp_set_clkname(&pdev->dev, "byte");
 	if (ret)