bus: mhi: host: Do not use uninitialized 'dev' pointer in mhi_init_irq_setup()

[ Upstream commit d0856a6d ]

In mhi_init_irq_setup, the device pointer used for dev_err() was not
initialized. Use the pointer from mhi_cntrl instead.

Fixes: b0fc0167 ("bus: mhi: core: Allow shared IRQ for event rings")
Fixes: 3000f85b ("bus: mhi: core: Add support for basic PM operations")
Signed-off-by: Adam Xue <zxue@semtech.com>
[mani: reworded subject/description and CCed stable]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250905174118.38512-1-zxue@semtech.com


[ Adjust context ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>