wcn36xx: Add missing fall through comment in smd.c

This prevents GCC warning.
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NLoic Poulain <loic.poulain@linaro.org>
Acked-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/wcn36xx/smd.c

@@ -2143,6 +2143,7 @@ static int wcn36xx_smd_hw_scan_ind(struct wcn36xx *wcn, void *buf, size_t len)
 	switch (rsp->type) {
 	case WCN36XX_HAL_SCAN_IND_FAILED:
 		scan_info.aborted = true;
+		/* fall through */
 	case WCN36XX_HAL_SCAN_IND_COMPLETED:
 		mutex_lock(&wcn->scan_lock);
 		wcn->scan_req = NULL;