spi_qsd: Fix possible uninitialized variable

Change-Id: Ic0dedbad184046e9835cde015ad5d592f33e82a6
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
diff --git a/drivers/spi/spi_qsd.c b/drivers/spi/spi_qsd.c
index 062621d..4896556 100644
--- a/drivers/spi/spi_qsd.c
+++ b/drivers/spi/spi_qsd.c
@@ -1247,7 +1247,7 @@
 {
 	struct device *dev;
 	struct spi_transfer *first_xfr;
-	struct spi_transfer *nxt_xfr;
+	struct spi_transfer *nxt_xfr = NULL;
 	void *tx_buf, *rx_buf;
 	unsigned tx_len, rx_len;
 	int ret = -EINVAL;