spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()

spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()

BugLink: https://bugs.launchpad.net/bugs/1951822
[ Upstream commit ca9b8f56ec089d3a436050afefd17b7237301f47 ]

Fix the missing clk_disable_unprepare() before return
from bcm_qspi_probe() in the error handling case.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20211018073413.2029081-1-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>