spi: zynq-qspi: Replace kzalloc with kmalloc for buffer allocation

In zynq_qspi_exec_mem_op(), the temporary buffer is allocated with
kzalloc and then immediately initialized using memset to 0xff. To
optimize this, replace kzalloc with kmalloc, as the zeroing operation
is redundant and unnecessary.

Signed-off-by: Kuan-Wei Chiu <[email protected]>
Reviewed-by: Michal Simek <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: visitorckw

drivers/spi/spi-zynq-qspi.c

@@ -569,7 +569,7 @@ static int zynq_qspi_exec_mem_op(struct spi_mem *mem,
 	}
 
 	if (op->dummy.nbytes) {
-		tmpbuf = kzalloc(op->dummy.nbytes, GFP_KERNEL);
+		tmpbuf = kmalloc(op->dummy.nbytes, GFP_KERNEL);
 		if (!tmpbuf)
 			return -ENOMEM;