diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 036d8ae41c06..408e348382c5 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -965,8 +965,10 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem,
 
 	if (op->cmd.opcode) {
 		tmpbuf = kzalloc(op->cmd.nbytes, GFP_KERNEL | GFP_DMA);
-		if (!tmpbuf)
+		if (!tmpbuf) {
+			mutex_unlock(&xqspi->op_lock);
 			return -ENOMEM;
+		}
 		tmpbuf[0] = op->cmd.opcode;
 		reinit_completion(&xqspi->data_completion);
 		xqspi->txbuf = tmpbuf;