Applied "spi: stm32-qspi: Fix kernel oops when unbinding driver" to the spi tree

The patch spi: stm32-qspi: Fix kernel oops when unbinding driver has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-5.4 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24

spi: stm32-qspi: Fix kernel oops when unbinding driver

From: Patrice Chotard spi_master_put() must only be called in .probe() in case of error. As devm_spi_register_master() is used during probe, spi_master_put() mustn't be called in .remove() callback. It fixes the following kernel WARNING/Oops when executing echo "58003000.spi" > /sys/bus/platfor