fix(mmc): remove redundant reset_to_idle call

mmc_enumerate() is the only caller of mmc_send_op_cond().
mmc_enumerate() calls mmc_reset_to_idle() just before calling
mmc_send_op_cond(). No need to do that again in mmc_send_op_cond().

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Change-Id: Ib8c8ed1a559e3fecb315245f91bb3dc1f547d820
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 2b727d4..57f4748 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -452,11 +452,6 @@
 	int ret, n;
 	unsigned int resp_data[4];
 
-	ret = mmc_reset_to_idle();
-	if (ret != 0) {
-		return ret;
-	}
-
 	for (n = 0; n < SEND_OP_COND_MAX_RETRIES; n++) {
 		ret = mmc_send_cmd(MMC_CMD(1), OCR_SECTOR_MODE |
 				   OCR_VDD_MIN_2V7 | OCR_VDD_MIN_1V7,