scsi: megaraid_sas: remove set but not used variables 'buff_addr' and 'ci_h'

Fixes gcc '-Wunused-but-set-variable' warnings:

drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_fw_crash_buffer_show:
drivers/scsi/megaraid/megaraid_sas_base.c:3138:16: warning: variable buff_addr set but not used [-Wunused-but-set-variable]
drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_get_pd_list:
drivers/scsi/megaraid/megaraid_sas_base.c:4426:13: warning: variable ci_h set but not used [-Wunused-but-set-variable]

'buff_addr' is never used since inroduction in commit fc62b3fc
("megaraid_sas : Firmware crash dump feature support")

'ci_h' is not used since commit 9b3d028f ("scsi: megaraid_sas:
Pre-allocate frequently used DMA buffers")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/megaraid/megaraid_sas_base.c

@@ -3147,7 +3147,6 @@ megasas_fw_crash_buffer_show(struct device *cdev,
 	struct megasas_instance *instance =
 		(struct megasas_instance *) shost->hostdata;
 	u32 size;
-	unsigned long buff_addr;
 	unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
 	unsigned long src_addr;
 	unsigned long flags;
@@ -3164,8 +3163,6 @@ megasas_fw_crash_buffer_show(struct device *cdev,
 		return -EINVAL;
 	}
 
-	buff_addr = (unsigned long) buf;
-
 	if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
 		dev_err(&instance->pdev->dev,
 			"Firmware crash dump offset is out of range\n");
@@ -4413,7 +4410,6 @@ megasas_get_pd_list(struct megasas_instance *instance)
 	struct megasas_dcmd_frame *dcmd;
 	struct MR_PD_LIST *ci;
 	struct MR_PD_ADDRESS *pd_addr;
-	dma_addr_t ci_h = 0;
 
 	if (instance->pd_list_not_supported) {
 		dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
@@ -4422,7 +4418,6 @@ megasas_get_pd_list(struct megasas_instance *instance)
 	}
 
 	ci = instance->pd_list_buf;
-	ci_h = instance->pd_list_buf_h;
 
 	cmd = megasas_get_cmd(instance);