[PATCH] mt6625l: fix returnvar.cocci warnings

[kernel test robot <lkp@intel.com>]

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From: kernel test robot <lkp@intel.com>

drivers/misc/mediatek/btif/common/mtk_btif.c:958:5-10: Unneeded variable: "i_ret". Return "0" on line 967
drivers/misc/mediatek/btif/common/mtk_btif.c:2082:5-10: Unneeded variable: "i_ret". Return "0" on line 2085
drivers/misc/mediatek/btif/common/mtk_btif.c:2430:5-10: Unneeded variable: "i_ret". Return "0" on line 2444


 Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

Fixes: 5a3d075a983c ("mt6625l: include wifi-folder")
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://github.com/frank-w/BPI-R2-4.14 5.8-wifi
head:   4b8951570a4f2ef564d134f5aa8779fd067af1c9
commit: 5a3d075a983c166a2a4294c272b47698e24c97c6 [5/11] mt6625l: include wifi-folder

Please take the patch only if it's a positive warning. Thanks!

 mtk_btif.c |   11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

--- a/drivers/misc/mediatek/btif/common/mtk_btif.c
+++ b/drivers/misc/mediatek/btif/common/mtk_btif.c
@@ -955,7 +955,6 @@ int _btif_irq_reg(P_MTK_BTIF_IRQ_STR p_i
 
 int _btif_irq_free(P_MTK_BTIF_IRQ_STR p_irq, void *data)
 {
-	int i_ret = 0;
 	unsigned int eint_num = p_irq->irq_id;
 
 	if ((p_irq->is_irq_sup) && (p_irq->reg_flag)) {
@@ -964,7 +963,7 @@ int _btif_irq_free(P_MTK_BTIF_IRQ_STR p_
 		p_irq->reg_flag = false;
 	}
 /*do nothing for this operation*/
-	return i_ret;
+	return 0;
 }
 
 int _btif_irq_ctrl(P_MTK_BTIF_IRQ_STR p_irq, bool en)
@@ -2079,10 +2078,8 @@ static ENUM_BTIF_STATE _btif_state_get(p
 
 static int _btif_state_release(p_mtk_btif p_btif)
 {
-	int i_ret = 0;
-
 	BTIF_MUTEX_UNLOCK(&(p_btif->state_mtx));
-	return i_ret;
+	return 0;
 }
 
 static int _btif_state_deinit(p_mtk_btif p_btif)
@@ -2427,8 +2424,6 @@ btm_init_err:
 
 static int _btif_tx_ctx_deinit(p_mtk_btif p_btif)
 {
-	int i_ret = 0;
-
 	if (p_btif->tx_ctx == BTIF_TX_SINGLE_CTX) {
 		if (p_btif->p_tx_wq) {
 			destroy_workqueue(p_btif->p_tx_wq);
@@ -2441,7 +2436,7 @@ static int _btif_tx_ctx_deinit(p_mtk_bti
 			p_btif->p_tx_fifo = NULL;
 		}
 	}
-	return i_ret;
+	return 0;
 }
 
 static int _btif_rx_btm_init(p_mtk_btif p_btif)