phy: stm32: fix an error code in probe

stable inclusion
from stable-v5.10.155
commit 72ea2fc29962f3bb16eba80a2f0c88ffa6bb9e08
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7M5F4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=72ea2fc29962f3bb16eba80a2f0c88ffa6bb9e08



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[ Upstream commit ca1c7362 ]

If "index > usbphyc->nphys" is true then this returns success but it
should return -EINVAL.

Fixes: 94c358da ("phy: stm32: add support for STM32 USB PHY Controller (USBPHYC)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/Y0kq8j6S+5nDdMpr@kili


Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>