staging: rtlwifi: use kcalloc instead of multiply

checkpatch emits multiple warnings of type

WARNING:ALLOC_WITH_MULTIPLY: Prefer kcalloc over kzalloc with multiply

Replace two calls to kzalloc() with calls to kcalloc().
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtlwifi/efuse.c

@@ -252,12 +252,11 @@ void read_efuse(struct ieee80211_hw *hw, u16 _offset, u16 _size_byte, u8 *pbuf)
 			    sizeof(u8), GFP_ATOMIC);
 	if (!efuse_tbl)
 		return;
-	efuse_word = kzalloc(EFUSE_MAX_WORD_UNIT * sizeof(u16 *), GFP_ATOMIC);
+	efuse_word = kcalloc(EFUSE_MAX_WORD_UNIT, sizeof(u16 *), GFP_ATOMIC);
 	if (!efuse_word)
 		goto out;
 	for (i = 0; i < EFUSE_MAX_WORD_UNIT; i++) {
-		efuse_word[i] = kzalloc(efuse_max_section * sizeof(u16),
-					GFP_ATOMIC);
+		efuse_word[i] = kcalloc(efuse_max_section, sizeof(u16), GFP_ATOMIC);
 		if (!efuse_word[i])
 			goto done;
 	}