mmc: mediatek: Remove redundant runtime PM calls

Commit 9250aea76bfc ("mmc: core: Enable runtime PM management of host
devices"), made some calls to the runtime PM API from the driver
redundant. Especially those which deals with runtime PM reference
counting, so let's remove them.

Cc: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index b17f30d..5642f71 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -736,9 +736,6 @@
 	if (mrq->data)
 		msdc_unprepare_data(host, mrq);
 	mmc_request_done(host->mmc, mrq);
-
-	pm_runtime_mark_last_busy(host->dev);
-	pm_runtime_put_autosuspend(host->dev);
 }
 
 /* returns true if command is fully handled; returns false otherwise */
@@ -886,8 +883,6 @@
 	WARN_ON(host->mrq);
 	host->mrq = mrq;
 
-	pm_runtime_get_sync(host->dev);
-
 	if (mrq->data)
 		msdc_prepare_data(host, mrq);
 
@@ -1201,8 +1196,6 @@
 	struct msdc_host *host = mmc_priv(mmc);
 	int ret;
 
-	pm_runtime_get_sync(host->dev);
-
 	msdc_set_buswidth(host, ios->bus_width);
 
 	/* Suspend/Resume will do power off/on */
@@ -1214,7 +1207,7 @@
 					ios->vdd);
 			if (ret) {
 				dev_err(host->dev, "Failed to set vmmc power!\n");
-				goto end;
+				return;
 			}
 		}
 		break;
@@ -1242,10 +1235,6 @@
 
 	if (host->mclk != ios->clock || host->timing != ios->timing)
 		msdc_set_mclk(host, ios->timing, ios->clock);
-
-end:
-	pm_runtime_mark_last_busy(host->dev);
-	pm_runtime_put_autosuspend(host->dev);
 }
 
 static u32 test_delay_bit(u32 delay, u32 bit)
@@ -1408,19 +1397,15 @@
 	struct msdc_host *host = mmc_priv(mmc);
 	int ret;
 
-	pm_runtime_get_sync(host->dev);
 	ret = msdc_tune_response(mmc, opcode);
 	if (ret == -EIO) {
 		dev_err(host->dev, "Tune response fail!\n");
-		goto out;
+		return ret;
 	}
 	ret = msdc_tune_data(mmc, opcode);
 	if (ret == -EIO)
 		dev_err(host->dev, "Tune data fail!\n");
 
-out:
-	pm_runtime_mark_last_busy(host->dev);
-	pm_runtime_put_autosuspend(host->dev);
 	return ret;
 }