misc: rtsx: Fix clang -Wsometimes-uninitialized in rts5261_init_from_hw()

Clang warns:

  drivers/misc/cardreader/rts5261.c:406:13: error: variable 'setting_reg2' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
          } else if (efuse_valid == 0) {
                     ^~~~~~~~~~~~~~~~
  drivers/misc/cardreader/rts5261.c:412:30: note: uninitialized use occurs here
          pci_read_config_dword(pdev, setting_reg2, &lval2);
                                      ^~~~~~~~~~~~

efuse_valid == 1 is not a valid value so just return early from the
function to avoid using setting_reg2 uninitialized.

Fixes: b1c5f3085149 ("misc: rtsx: add rts5261 efuse function")
Reported-by: Dan Carpenter <[email protected]>
Reported-by: kernel test robot <[email protected]>
Reported-by: Tom Rix <[email protected]>
Suggested-by: Ricky WU <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions