diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
index 001b199a8c33..187d1086d15c 100644
--- a/drivers/platform/x86/intel_scu_ipc.c
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -216,13 +216,13 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
 	int nc;
 	u32 offset = 0;
 	int err;
-	u8 cbuf[IPC_WWBUF_SIZE] = { };
+	u8 cbuf[IPC_WWBUF_SIZE];
 	u32 *wbuf = (u32 *)&cbuf;
 
-	mutex_lock(&ipclock);
-
 	memset(cbuf, 0, sizeof(cbuf));
 
+	mutex_lock(&ipclock);
+
 	if (ipcdev.pdev == NULL) {
 		mutex_unlock(&ipclock);
 		return -ENODEV;