Input: aiptek - remove redundant assignment to variable ret

Variable ret is being assigned a value that is never read, it is
being re-assigned again in either path of the if statement. The
assignment is redundant and can be removed.

Cleans up clang scan build warning:
Although the value stored to 'ret' is used in the enclosing expression,
the value is never actually read from 'ret' [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220418142457.84708-1-colin.i.king@gmail.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/tablet/aiptek.c

@@ -931,8 +931,7 @@ aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
 	}
 	msleep(aiptek->curSetting.programmableDelay);
 
-	if ((ret =
-	     aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
+	if (aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf) != sizeof_buf) {
 		dev_dbg(&aiptek->intf->dev,
 			"aiptek_query failed: returned 0x%02x 0x%02x 0x%02x\n",
 			buf[0], buf[1], buf[2]);