iio: gyro: mpu3050: Fix error handling in mpu3050_trigger_handler

stable inclusion
from stable-5.10.26
commit f8bfbd3917fa18b6ba45e069e0d921f777902797
bugzilla: 51363

--------------------------------

commit 6dbbbe4c upstream.

There is one regmap_bulk_read() call in mpu3050_trigger_handler
that we have caught its return value bug lack further handling.
Check and terminate the execution flow just like the other three
regmap_bulk_read() calls in this function.

Fixes: 3904b28e ("iio: gyro: Add driver for the MPU-3050 gyroscope")
Signed-off-by: NDinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210301080421.13436-1-dinghao.liu@zju.edu.cn
Cc: <Stable@vger.kernel.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: N  Weilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/iio/gyro/mpu3050-core.c

@@ -550,6 +550,8 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p)
 					       MPU3050_FIFO_R,
 					       &fifo_values[offset],
 					       toread);
+			if (ret)
+				goto out_trigger_unlock;
 
 			dev_dbg(mpu3050->dev,
 				"%04x %04x %04x %04x %04x\n",