platform: msm_shared: Fix MMC tuning in LK for re-tuning.

While re-tuning we send switch command which fails, as per
expectation since host clock is already on 200MHZ, need to
continue with re-tuning and change device strength to default,
similar thing done in HLOS.

Change-Id: I613692dea43dfd3fc20efc7980efa371a152d027
diff --git a/platform/msm_shared/sdhci_msm.c b/platform/msm_shared/sdhci_msm.c
index 1d4229a..1063278 100644
--- a/platform/msm_shared/sdhci_msm.c
+++ b/platform/msm_shared/sdhci_msm.c
@@ -812,11 +812,9 @@
 		/* Change the driver type & rerun tuning */
 		while(++drv_type <= MX_DRV_SUPPORTED_HS200)
 		{
-			drv_type_changed = mmc_set_drv_type(host, card, drv_type);
-			if (drv_type_changed)
-			{
+			if (mmc_set_drv_type(host, card, drv_type))
 				goto retry_tuning;
-			}
+			drv_type_changed = true;
 		}
 	}