Bluetooth: btmrvl: fix error return code in btmrvl_sdio_card_to_host()

Fix to return -ENOMEM in the skb alloc error handling case
instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 13693b7..75c2626 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -554,6 +554,7 @@
 	skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
 	if (skb == NULL) {
 		BT_ERR("No free skb");
+		ret = -ENOMEM;
 		goto exit;
 	}